T3 measurements are used to diagnose hyperthyroidism. This test can also be used to clarify thyroid status in the presence of possible protein-binding abnormalities.
Reported (Analytical Time)
The CPT codes provided are based on AMA guidelines and are for informational purposes only.
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Please direct any questions regarding coding to the payer being billed.
METHODOLOGY: Equilibrium Dialysis by RIA, Immunochemiluminescence Reference Range: Pregnancy Reference Range for Free T3: 200-400 pg/dL (all trimesters) T3, Total: <4 years: Reference Range Not Established Transport Temperature: Room temperature