Thyrotropin
Measures the pituitary hormone that controls thyroid function.
Why This Biomarker Matters
TSH is the most reliable single test for detecting thyroid dysfunction. Untreated thyroid disorders can cause fatigue, weight changes, mood problems, and cardiovascular complications.
Understanding Your Results
Normal Range
0.4 – 4 mIU/L
Overview
Thyroid stimulating hormone (TSH) is produced by the pituitary gland and regulates thyroid hormone production. A TSH test is the primary screening tool for thyroid disorders. Elevated TSH suggests an underactive thyroid (hypothyroidism), while low TSH may indicate an overactive thyroid (hyperthyroidism). Thyroid function affects metabolism, energy, weight, and mood. This is one of the most frequently ordered tests because thyroid dysfunction is common and affects overall health.
Related Health Conditions
Conditions where Thyrotropin is commonly tested
Related Health Goals
Treatments & Interventions
Therapies monitored using Thyrotropin
Clinical Trials
Recent Trials
Natural History of Thyroid Function Disorders
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Research & Evidence
3 publications
Research data from MEDLINE/PubMed · 3 articles
Technical Information (LOINC Codes)
Standardized laboratory codes for this biomarker
3016-3Primary29574-111580-811579-03015-529575-826998-520452-969561-9Available Lab Tests
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Find Specialists
Doctors who commonly order this test