Specimen Requirements
Title
Anti-Biotic Susceptibility
Specimen Requirement
Primary specimen or pure isolate.
Methodology
Stability
Reference Range
Turnaround
Clinical Use
Test Code
Contact Lab
Thyroid Testing Update: Effective 02/01/2026, T3 Uptake will be discontinued and replaced with Free T4 testing. Free T4 more directly reflects active thyroxine levels and supports clearer clinical interpretation than older, indirect binding assessments. (Click here for more information)