Free T4 & TSH panel

ChemistryAlso known as: T4 Free+ TSH Pnl SerPlN/A

Measures both TSH and free thyroid hormone (T4) to comprehensively assess thyroid function.

Normal Range

Consult your provider

N/A

Abnormal Levels

Consult your provider

Specimen Type

Blood

Why This Biomarker Matters

This two-part test accurately diagnoses thyroid disorders and guides treatment. Both values together reveal whether a thyroid problem originates in the gland or the pituitary.

Overview

This panel measures both thyroid stimulating hormone (TSH) from the pituitary gland and free T4 (thyroxine), the active thyroid hormone. Together, these tests provide a comprehensive assessment of thyroid function. TSH shows whether the pituitary is signaling the thyroid correctly, while free T4 measures the actual active hormone. This combination is more reliable than either test alone for diagnosing thyroid disorders.

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

24348-5Primary

Free T4 and TSH panel - Serum or Plasma

Available Lab Tests

Order tests that measure this biomarker

Free T4

$19.75

Results in 1-2 business days

T4 Free Direct Dialysis

$94.42