Urinary Organic Acids

5-hydroxyindoleacetate (5-HIAA) is a breakdown product of serotonin measured in urine. Serotonin is a chemical messenger in your body that affects mood, digestion, and other functions. Elevated urinary 5-HIAA levels are primarily associated with carcinoid syndrome, a rare condition caused by neuroendocrine tumors that overproduce serotonin. This test is used to screen for and monitor carcinoid tumors, which can cause flushing, diarrhea, and heart valve problems.

Lactate is produced when tissues break down glucose without sufficient oxygen (anaerobic metabolism). Elevated serum or plasma lactate is a critical marker of tissue hypoperfusion and is widely used in the diagnosis and monitoring of sepsis, shock, and other conditions causing inadequate oxygen delivery. Serial lactate measurements guide resuscitation efforts in intensive care—declining lactate levels indicate improving tissue perfusion. Elevated lactate can also result from seizures, vigorous exercise, liver failure, certain medications, and mitochondrial disorders.

Methylsuccinate is an organic acid produced during cellular metabolism. Elevated blood methylsuccinate levels are associated with inherited metabolic disorders affecting how your body breaks down certain amino acids and fats, particularly methylmalonic acidemia and related conditions. These rare genetic disorders can cause neurological problems, developmental delay, and organ damage if unmanaged. This test is part of expanded newborn screening panels and is used in metabolic disease evaluation. Identification allows for early dietary management and supplementation to prevent serious complications.

Creatinine is a waste product produced by muscle metabolism and filtered by the kidneys into urine. This test measures creatinine in an 8-hour urine collection and reflects kidney filtration function. Creatinine levels help assess kidney health and are often used to calculate glomerular filtration rate (GFR), which indicates how well your kidneys filter waste. Low creatinine output may suggest reduced muscle mass or kidney disease, while the ratio of protein to creatinine helps assess kidney protein loss. This test is frequently ordered in patients with diabetes, high blood pressure, or known kidney disease.

Vanillylmandelate (VMA) is a breakdown product of catecholamines—hormones like epinephrine and norepinephrine that regulate stress response and blood pressure. A 24-hour urine VMA test measures this metabolite and is primarily used to screen for pheochromocytoma, a rare tumor of the adrenal glands that causes uncontrolled hormone release. Elevated VMA may indicate this tumor or other conditions affecting catecholamine metabolism. This test is important for investigating unexplained high blood pressure or specific stress-related symptoms.

2-hydroxyglutarate (2-HG) is an organic acid produced during normal cellular energy metabolism. Elevated levels in blood may indicate a rare genetic disorder affecting metabolism, such as 2-hydroxyglutaric aciduria, or can be seen in certain cancers. This test helps identify metabolic disorders or underlying malignancies in patients with unexplained symptoms. Abnormal accumulation can cause neurological symptoms, developmental delays, or organ dysfunction depending on severity.

3-hydroxyglutarate (3-HG) is an organic acid produced during normal amino acid metabolism. Elevated blood levels may indicate rare metabolic disorders affecting glutamic acid metabolism or certain genetic conditions. This test helps identify inborn errors of metabolism that could cause neurological symptoms, developmental delays, or organ dysfunction. Abnormal accumulation of this compound interferes with normal cellular energy production and protein synthesis.

Ethylmalonate is an organic acid produced during normal fat and amino acid metabolism. Measuring ethylmalonate levels in blood helps detect rare metabolic disorders affecting fatty acid oxidation. Elevated ethylmalonate typically indicates a genetic defect in the enzyme ethylmalonyl-CoA mutase (EDHD, ethylmalonic encephalopathy). This rare condition causes neurological and developmental problems. Testing is usually ordered when investigating developmental delays, neurological symptoms, or as part of newborn screening for metabolic disorders.

Succinylacetone is a toxic compound produced in tyrosinemia type 1, a rare genetic metabolic disorder affecting amino acid processing. This newborn screening test uses bloodspot analysis to measure succinylacetone levels, as elevated levels indicate impaired liver enzyme function. Tyrosinemia type 1 causes progressive liver disease, kidney dysfunction, neurological problems, and increased cancer risk without treatment. Early detection through newborn screening allows prompt initiation of dietary restriction and medications to prevent liver failure, kidney damage, and other serious complications.

Beta-hydroxybutyrate is the predominant ketone body produced when the body burns fat for energy instead of carbohydrates. This test measures its concentration in serum or plasma and is the most reliable marker of ketosis. Elevated levels occur during diabetic ketoacidosis (DKA), prolonged fasting, starvation, and ketogenic diets. In the emergency setting, serum beta-hydroxybutyrate is preferred over urine ketone testing for diagnosing and monitoring DKA because it reflects real-time ketone production and responds more quickly to treatment.

Citrate is an organic acid that plays important roles in energy metabolism and bone health. Blood citrate levels reflect metabolic function and can indicate metabolic disorders or mineral imbalances. Citrate is also critical for preventing kidney stone formation—low citrate increases stone risk while adequate levels provide protection. Testing is sometimes ordered to evaluate kidney stone formation risk, assess metabolic acidosis, or investigate abnormal mineral metabolism. Citrate supplementation is occasionally used therapeutically to prevent recurrent kidney stones, making baseline measurement useful for treatment monitoring.

Pyruvate is a key intermediate in cellular energy metabolism, sitting at the crossroads of glycolysis, gluconeogenesis, and the citric acid cycle. Blood pyruvate levels reflect the balance between aerobic and anaerobic metabolism. Elevated pyruvate, particularly with an abnormal lactate-to-pyruvate ratio, is an important indicator of mitochondrial disorders and inborn errors of metabolism. The lactate/pyruvate ratio helps distinguish mitochondrial respiratory chain defects (high ratio) from pyruvate metabolism disorders (normal ratio). Pyruvate is measured less commonly than lactate but adds diagnostic specificity in metabolic evaluations.

HMB-45 is a protein marker found in melanoma and other pigmented tumors. This immunohistochemical stain detects HMB-45 antigen in tissue samples, helping pathologists diagnose melanoma and distinguish it from benign moles or other skin cancers. A positive stain supports melanoma diagnosis and can guide treatment decisions. This test is performed on biopsied tissue under a microscope by trained pathologists as part of cancer diagnosis and staging.

4-Hydroxyphenylpyruvate (4-HPP) is a compound found in urine that appears elevated in tyrosinemia, a genetic disorder affecting amino acid metabolism. Tyrosinemia impairs the breakdown of the amino acid tyrosine, leading to toxic buildup affecting the liver, kidneys, and eyes. Early detection through urine screening, particularly in newborns, is critical for starting dietary restriction and medical treatment. Untreated tyrosinemia causes liver cirrhosis, kidney failure, and increased cancer risk.

Sebacate is a dicarboxylic acid detected in urine that may indicate fatty acid oxidation disorders or metabolic dysfunction. Elevated sebacate can suggest conditions affecting mitochondrial energy production or carnitine deficiency. This test is sometimes used in metabolic screening panels, particularly for unexplained fatigue, muscle weakness, or developmental delays. Detection prompts further metabolic evaluation and may guide specialized dietary or supplemental interventions.

2-Hydroxy-3-methylvalerate (2-HMV) is a compound detected in urine that indicates impaired branched-chain amino acid metabolism. Elevated levels suggest organic acidemia or other metabolic disorders affecting how the body processes certain amino acids. This test is often part of newborn screening or metabolic evaluation for unexplained symptoms like developmental delay, poor feeding, or metabolic crises. Early detection enables dietary management and medical intervention.

3-hydroxy,3-methylglutarate (HMG) is an organic acid produced during the breakdown of certain amino acids and fats. This urine test detects abnormal levels of HMG, which may indicate a rare metabolic disorder called HMG-CoA lyase deficiency. In this condition, the body cannot properly break down certain nutrients, leading to a dangerous buildup of acids in the blood. Early detection through urine screening is important for managing this inherited metabolic condition and preventing serious complications.

4-hydroxyphenyllactate is an organic compound found in urine that can indicate disturbances in amino acid metabolism. This urine test detects abnormal levels of this metabolite, which may signal a rare metabolic disorder or nutritional imbalance. Elevated levels can sometimes indicate disorders affecting the breakdown of the amino acid tyrosine. This test is typically ordered when patients have unexplained symptoms or abnormal newborn screening results suggesting a metabolic problem, allowing early intervention before serious health issues develop.

Orotate is an organic compound involved in the synthesis of nucleotides, the building blocks of DNA and RNA. This urine test detects abnormal orotate levels, which may indicate a rare inherited metabolic disorder called orotic aciduria. In this condition, the body cannot properly process orotate, leading to its accumulation and excretion in urine. This can cause developmental delays, anemia, and growth problems. Early diagnosis through urine screening is essential for initiating specialized treatment with uridine supplementation, which can prevent serious developmental and health complications.

3-hydroxyadipate is an organic acid produced during the breakdown of certain amino acids, particularly lysine and tryptophan. This urine test detects abnormal levels that may indicate a rare metabolic disorder affecting amino acid metabolism. Elevated 3-hydroxyadipate can be associated with conditions like 3-hydroxyacyl-CoA dehydrogenase deficiency or other metabolic disturbances. This test is typically ordered when patients have unexplained symptoms, developmental concerns, or abnormal newborn screening results, allowing early diagnosis and intervention to manage the metabolic condition effectively.

Acetoacetate is a ketone body produced when the body breaks down fat for energy, particularly during fasting, low-carbohydrate diets, or in uncontrolled diabetes. This urine test measures acetoacetate levels, which become elevated during ketosis or diabetic ketoacidosis (DKA). Trace amounts may be normal during fasting or dieting, but significant levels warrant evaluation. In diabetic patients, high acetoacetate indicates dangerously elevated blood acid levels requiring emergency treatment. This test helps clinicians monitor metabolic states and detect dangerous conditions in at-risk patients.

2-hydroxyisocaproate is an organic acid that may be detected in urine. Elevated urinary levels may indicate metabolic disorders affecting fatty acid or amino acid metabolism. This qualitative test identifies the presence or absence of this compound. Abnormal levels can suggest conditions like mitochondrial disorders, metabolic acidosis, or certain genetic metabolic diseases. The test is often part of a comprehensive metabolic screening.

3-methylglutaconate is an organic acid that may appear in urine when metabolism is disrupted. This qualitative test identifies its presence or absence. Elevated urinary levels may indicate 3-methylglutaconic aciduria, a rare metabolic disorder affecting the breakdown of leucine and other amino acids. This condition can affect muscle function and neurological development. The test is part of screening for inborn errors of metabolism, especially in newborns or children with developmental concerns.

3-Hydroxyisovalerate is an organic acid produced during the breakdown of branched-chain amino acids (proteins). Elevated levels in urine can indicate metabolic disorders affecting amino acid metabolism, such as maple syrup urine disease or other organic acidemias. This urine test helps detect inherited metabolic conditions that may cause developmental delays, neurological problems, or nutritional deficiencies if left untreated. It is often part of newborn screening or evaluation for unexplained metabolic symptoms.

2-Oxoisovalerate is an organic acid intermediate produced during branched-chain amino acid metabolism. Its presence in urine at elevated levels may indicate disorders of amino acid metabolism, including maple syrup urine disease and other inherited metabolic conditions. This urine test is used for newborn screening and evaluating patients with symptoms like poor feeding, lethargy, or developmental delay. Detection allows early intervention to prevent serious health complications.

3-Hydroxyvalerate is an organic acid produced during fat and amino acid metabolism. Elevated urine levels can signal metabolic disorders such as propionic acidemia, methylmalonic acidemia, or other organic acid disorders. These rare inherited conditions affect how the body processes certain nutrients and can cause seizures, developmental delays, and organ damage. This test is commonly used in newborn screening programs and for evaluating unexplained metabolic symptoms in children and adults.

N-acetyltyrosine is a modified amino acid found in urine that relates to protein metabolism and oxidative stress. Elevated levels may suggest liver dysfunction, metabolic disorders, or conditions affecting amino acid processing. This test can be part of comprehensive metabolic screening to evaluate organ function, nutritional status, and overall health. Abnormal results warrant further investigation to identify underlying conditions affecting protein metabolism or detoxification pathways.

2-Hydroxyisovalerate is an organic acid produced during branched-chain amino acid metabolism. Its presence in urine can indicate metabolic disorders such as maple syrup urine disease, where the body cannot properly break down certain amino acids found in protein. These inherited conditions can cause developmental delays, seizures, and neurological damage if undetected. This urine test is a key component of newborn screening programs and helps identify at-risk individuals early for immediate intervention.

3-Hydroxyisobutyrate is an organic acid produced during metabolism of branched-chain amino acids and other nutrients. Elevated urine levels can indicate organic acid disorders, metabolic dysfunction, or nutritional imbalances. This test is used in newborn screening and for evaluating unexplained symptoms like developmental delay, poor feeding, or lethargy. These metabolic conditions require early identification and specialized dietary management to prevent serious health complications and neurological decline.

Propionylglycine is an organic acid found in urine that indicates how your body metabolizes certain amino acids and fatty acids. Elevated levels can suggest propionic acidemia or methylmalonic acidemia, rare inherited disorders that disrupt metabolism and can cause seizures, developmental delays, and organ damage. This test is particularly important in newborn screening programs and for investigating unexplained symptoms in infants and children. Early detection enables specialized dietary management and medical treatment to prevent serious complications.

Hexanoylglycine is an organic acid in urine that reflects the metabolism of certain fatty acids and amino acids. Elevated levels can indicate metabolic disorders affecting fat breakdown, such as medium-chain acyl-CoA dehydrogenase (MCAD) deficiency or other fatty acid oxidation disorders. These inherited conditions can cause low blood sugar, liver problems, and developmental issues. This urine test helps identify at-risk individuals through newborn screening or evaluation of metabolic symptoms, enabling early intervention and dietary management.

Tiglylglycine is a urinary organic acid metabolite that indicates a specific pattern of fatty acid metabolism dysfunction. Its presence in urine suggests possible fatty acid oxidation disorders, particularly short-chain acyl-CoA dehydrogenase (SCAD) deficiency or related metabolic conditions. These rare genetic disorders impair the body's ability to break down certain fats for energy, potentially causing fatigue, muscle weakness, or developmental delays. Detecting tiglylglycine helps identify these serious metabolic disorders requiring specialized management.

3-Hydroxypropionate is an organic acid excreted in urine that reflects abnormal metabolism of certain amino acids and fatty acids. Its presence suggests possible propionyl-CoA carboxylase deficiency (propionic acidemia) or other organic acid disorders affecting amino acid and fatty acid breakdown. These are rare genetic metabolic conditions that can cause neurological problems, developmental delays, and metabolic crises. Detection of 3-hydroxypropionate helps identify these serious conditions early for specialized dietary and medical management.

Suberylglycine is an organic compound detected in urine that may indicate fatty acid oxidation disorders, particularly related to medium- and long-chain fat metabolism. Presence of suberylglycine suggests your body may have difficulty properly breaking down certain dietary fats. This finding can be associated with genetic metabolic disorders that affect energy production and require dietary management. This test is typically ordered as part of newborn screening or when metabolic disorders are suspected.

This test measures dodecanedioate (a 12-carbon dicarboxylic acid) relative to creatinine in urine, reflecting fatty acid oxidation metabolism. Elevated levels indicate abnormal breakdown of medium- and long-chain fatty acids. This pattern suggests possible metabolic disorders affecting energy production from fats. The ratio accounts for urine concentration variation. This test is typically ordered when metabolic disorders are suspected or as part of metabolic screening, particularly in infants or children with developmental concerns.

Octanoate (caprylic acid) is an 8-carbon medium-chain fatty acid measured in blood. Elevated octanoate levels may indicate problems with fat metabolism or digestion, particularly involving medium-chain fatty acids. This can reflect fatty acid oxidation disorders, metabolic dysfunction, or certain genetic conditions affecting how your body processes dietary fats. This test helps assess metabolic health and is sometimes ordered when metabolic or digestive disorders are suspected.

3-Hydroxydodecanoate is a 12-carbon fatty acid metabolite detected in urine. Its presence suggests abnormal metabolism of medium- and long-chain fatty acids, potentially indicating fatty acid oxidation disorders. These genetic metabolic conditions impair your body's ability to break down fats for energy. This finding warrants further evaluation and may require dietary modifications, particularly limiting long-chain fats. This test is typically ordered during metabolic screening or when metabolic disease is suspected.

2-Hydroxyphenylacetate is a metabolite detected in urine that can indicate tyrosine metabolism abnormalities or certain genetic disorders affecting amino acid processing. Elevated levels suggest your body may have difficulty properly metabolizing the amino acid tyrosine. This can be associated with various metabolic disorders. Detection warrants investigation into amino acid metabolism and may indicate need for dietary management. This test is typically ordered as part of metabolic screening in newborns or when metabolic disorders are suspected.

3-Methylcrotonylglycine is a metabolite detected in urine that indicates abnormal metabolism of the amino acid leucine. Elevated levels suggest possible 3-methylcrotonyl-CoA carboxylase deficiency, a genetic metabolic disorder affecting how your body processes branched-chain amino acids. This condition can cause developmental delay, low muscle tone, and metabolic acidosis if untreated. Early detection through newborn screening allows for dietary management. This test is part of comprehensive metabolic screening, especially in newborns.

Homogentisate is an organic compound that appears in urine when your body breaks down certain amino acids. Elevated urinary homogentisate typically indicates alkaptonuria, a rare inherited metabolic disorder. In this condition, the enzyme responsible for breaking down homogentisate is deficient, causing accumulation. Alkaptonuria can lead to dark urine, darkening of connective tissues, and arthritis if undiagnosed. Early detection through this test allows for dietary management and monitoring to slow disease progression.

5-oxoproline (pyroglutamic acid) is an organic acid that accumulates in urine when your body's glutathione metabolism is disrupted. Elevated urinary 5-oxoproline may indicate 5-oxoprolinase deficiency, a rare inherited metabolic disorder affecting amino acid processing. It can also be elevated with certain medications (particularly acetaminophen overuse), illness, or nutritional deficiencies. This finding warrants evaluation by a metabolic specialist to determine the underlying cause and appropriate management.

3-methylglutarate is an organic acid that appears in urine when amino acid metabolism is disrupted. Elevated levels typically indicate 3-methylglutaconic aciduria, a rare inherited metabolic disorder affecting amino acid breakdown. This condition can cause neurological problems, muscle weakness, and developmental delays if left unmanaged. The presence of this compound warrants genetic testing and evaluation by a metabolic specialist to confirm the specific disorder and begin appropriate dietary and medical management.

2-oxoisocaproate is an organic acid that accumulates in urine when leucine metabolism is impaired. Elevated urinary levels may indicate maple syrup urine disease (MSUD) or other branched-chain amino acid metabolism disorders. These are serious inherited conditions that can cause neurological damage, developmental delays, and metabolic crisis if untreated. Newborn screening typically identifies MSUD early, but this test may be used in older children or adults with undiagnosed metabolic issues. Positive findings require immediate specialist evaluation.

Fumarate is an organic acid involved in cellular energy production. Its presence in urine may indicate disruption of the citric acid cycle or mitochondrial function. Elevated urinary fumarate can be associated with fumarase deficiency, a rare mitochondrial disorder, or other metabolic conditions affecting energy metabolism. This finding may explain unexplained fatigue, muscle weakness, or developmental delays. Positive results warrant evaluation by a metabolic specialist and genetic counseling.

Phenyllactate is an organic acid produced during phenylalanine metabolism. Its presence in urine suggests impaired phenylalanine breakdown, possibly indicating phenylketonuria (PKU) or related disorders. While PKU is typically identified through newborn screening, this test may detect missed cases or atypical variants in older children or adults. Elevated phenyllactate can be associated with neurological problems and developmental delays if the underlying amino acid disorder is unmanaged. Positive results require specialist evaluation.

Phenylpropionylglycine is an unusual organic acid in urine that indicates disrupted phenylalanine or aromatic amino acid metabolism. Its presence suggests disorders of amino acid processing or potentially abnormal gut bacterial metabolism. This compound may be detected in phenylketonuria variants, other amino acid metabolism disorders, or in response to certain medications or dietary supplements. Finding this metabolite warrants investigation to identify the underlying cause and prevent long-term metabolic complications.

Glutarate is an organic acid that accumulates in urine when lysine and tryptophan metabolism is disrupted. Elevated urinary glutarate indicates glutaric aciduria, a rare inherited metabolic disorder. This condition can cause progressive neurological damage, developmental delays, movement disorders, and brain degeneration if left untreated. Early detection through newborn screening is critical, but this test may identify missed cases in older individuals. Positive results require prompt evaluation and specialized metabolic management.

Phenylpyruvate is an organic acid that appears in urine when phenylalanine metabolism is severely impaired. Its presence is a hallmark of phenylketonuria (PKU), an inherited condition where the enzyme that breaks down phenylalanine is deficient. Elevated phenylpyruvate indicates high blood phenylalanine levels that can cause intellectual disability, light skin pigmentation, and neurological problems if not managed through dietary restriction. While PKU is typically identified through newborn screening, this test confirms diagnosis and guides treatment monitoring.

Malonate is an organic acid detected in urine as a screening marker for certain metabolic disorders, particularly those affecting energy metabolism and amino acid processing. Elevated urinary malonate may indicate inborn errors of metabolism or other metabolic dysfunction. This test is typically ordered as part of comprehensive metabolic screening in patients with unexplained developmental delays, failure to thrive, or metabolic symptoms. Results must be interpreted in clinical context with other metabolic markers.

Uracil is a nucleobase (building block of RNA) that circulates at low levels in the bloodstream. Elevated uracil levels can indicate uracil-5-carboxylase deficiency, a rare metabolic disorder affecting pyrimidine metabolism. Patients with this deficiency may experience delayed development, microcephaly, or other neurological symptoms. Testing uracil levels helps diagnose rare inborn errors of metabolism. Most individuals have undetectable or very low uracil, so any elevation warrants further metabolic investigation.

Thymine is a nucleobase (building block of DNA) that normally circulates at very low levels in the bloodstream. Elevated thymine levels can indicate rare metabolic disorders affecting nucleotide metabolism or clearance. This test may be ordered as part of specialized metabolic screening in patients with developmental delays, microcephaly, or other metabolic symptoms. Elevated thymine is uncommon and requires interpretation alongside other metabolic markers and clinical findings.

Adipate is an organic acid detected in urine as a screening marker for certain metabolic disorders, particularly those affecting fatty acid oxidation and energy metabolism. Elevated urinary adipate may indicate disorders of beta-oxidation or other metabolic dysfunction. This test is typically ordered as part of specialized metabolic screening in patients with unexplained fatigue, developmental delays, or metabolic symptoms. Results are interpreted alongside other organic acids and clinical context.

4-Hydroxycyclohexylacetate is a specialized organic acid measured in urine as a metabolic screening marker. This compound reflects intermediate metabolism related to cyclohexane metabolism or certain medication processing. Elevated levels may indicate unusual metabolic processing or exposure to specific compounds. This test is typically ordered as part of comprehensive metabolic screening in patients with developmental delays or unexplained metabolic symptoms. Interpretation requires clinical context and comparison with other metabolic markers.

3-Hydroxysebacate is an organic acid produced during fatty acid metabolism. Its presence in urine, detected through qualitative testing, may indicate a rare metabolic disorder affecting how your body breaks down certain fats. Abnormal levels can suggest medium-chain acyl-CoA dehydrogenase deficiency (MCADD) or other fatty acid oxidation disorders. This test is typically ordered when metabolic disorder is suspected, particularly in newborns or infants with unexplained symptoms.

Homovanillate is a metabolite of dopamine, a neurotransmitter involved in movement, mood, and reward. A 24-hour urine homovanillate test measures dopamine metabolism. Elevated levels may indicate neuroendocrine tumors (like pheochromocytoma), while decreased levels can suggest neurological disorders. This test is valuable for diagnosing catecholamine-secreting tumors and assessing dopamine-related metabolic disorders.

Isobutyrylglycine is an organic acid produced during amino acid metabolism. Its qualitative detection in urine may indicate a rare metabolic disorder affecting protein breakdown. Presence of this compound can suggest isobutyryl-CoA dehydrogenase deficiency or related amino acid metabolism disorders. This test is typically ordered during newborn screening or when metabolic disorders are suspected.

2-Methylbutyrylglycine is an organic compound found in urine that may indicate metabolic dysfunction, particularly related to amino acid and fatty acid breakdown. Elevated levels can suggest certain genetic metabolic disorders affecting how your body processes amino acids. This qualitative test is typically ordered when metabolic disease is suspected, particularly in newborn screening programs or when investigating unexplained developmental delays, muscle weakness, or other metabolic symptoms.

Suberate is an organic acid measured in urine that reflects mitochondrial function and fatty acid metabolism. Elevated urinary suberate may indicate metabolic dysfunction, fatty acid oxidation disorders, or mitochondrial disease. This test is often used in functional medicine and metabolic assessment to identify energy production problems. Abnormal levels can suggest need for dietary or supplement intervention to support cellular energy metabolism.

Succinate is an organic acid and key player in cellular energy production (the citric acid cycle). Elevated blood succinate may indicate mitochondrial dysfunction, metabolic disease, or impaired energy metabolism. This test is used in functional and metabolic medicine to assess cellular respiration and identify metabolic bottlenecks. Abnormal levels can guide dietary, supplement, or lifestyle interventions to restore energy production.

Trans-cinnamoylglycine is a metabolite produced when your body breaks down cinnamon. This test measures its level in urine relative to creatinine (a kidney waste product used to normalize urine concentration). Elevated levels suggest high cinnamon consumption or exposure. This marker is sometimes used in research or clinical settings to track dietary cinnamon intake objectively. It may also indicate exposure to cinnamates or related compounds. This test provides information about metabolism and dietary patterns, particularly in studies examining cinnamon's metabolic effects or in monitoring compliance with dietary interventions.

Glycerate is an organic compound measured in urine. Elevated urinary glycerate can indicate primary hyperoxaluria, a rare genetic disorder affecting how your body metabolizes certain compounds, leading to excess oxalate production. This causes kidney stones, kidney damage, and systemic calcium oxalate deposits. Testing urine glycerate helps identify this metabolic disorder early. While rare, early detection is critical because treatment can prevent serious kidney complications. This test is typically ordered when patients have recurrent kidney stones at a young age or a family history of kidney disease.

Isovalerylglycine is a compound detected in urine that indicates isovaleric acidemia, a rare genetic metabolic disorder. This condition impairs the breakdown of the amino acid leucine, causing toxic organic acids to accumulate in the body. Elevated isovalerylglycine levels cause neurological problems, developmental delays, and a characteristic 'sweaty feet' odor. This test is typically performed on newborn screening or in infants with developmental concerns. Early detection allows dietary management to prevent serious complications.

Glutaconate is an organic acid measured in urine. Elevated urinary glutaconate can indicate glutaric acidemia type 1, a rare genetic metabolic disorder affecting amino acid breakdown. This inherited condition can cause neurological damage, muscle weakness, and developmental delays if untreated. Newborn screening programs often test for this condition. If detected in older children or adults, it suggests either undiagnosed metabolic disease or a secondary metabolic disturbance requiring further evaluation and management.

4-Hydroxyphenylacetate is a metabolite found in urine that may indicate certain metabolic disorders or dietary influences. This qualitative test detects the presence or absence of this compound. Elevated levels can be associated with tyrosine metabolism disorders, certain gut bacterial dysbiosis, or specific genetic conditions affecting amino acid breakdown. The presence of this metabolite often requires further investigation and correlation with clinical symptoms.

2-Methyl-3-hydroxybutyrate is a metabolite related to branched-chain amino acid metabolism, detected in urine through qualitative testing. This compound's presence may indicate disorders of isoleucine metabolism or genetic conditions affecting branched-chain amino acid breakdown. Elevated levels are associated with certain metabolic disorders that can cause neurological complications if unmanaged. The finding typically prompts specialist evaluation and dietary management strategies.