T3 Uptake
Fasting Required: No

Specimen: Blood

Results: 1-2 Business Days

Description: The T3 uptake test helps to estimate the amount of TBG in the blood which in turn can help to determine how much T3 and T4 are unbound or free and able to affect the body's systems.

Methodology: Immunoassay (IA)

Alternative Name(s): Resin Uptake, T3 Index, Triiodothyronine, Resin Uptake (T3), T3U, T3RU, T3 Resin Uptake, T3 (Triiodothyronine), Hanolsky Uptake Test

Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.