Specimen Requirements
Title
RETICULOCYTES (RETIC COUNT)
Specimen Requirement
1-Lav top
Methodology
Stability
Refrigerated 72 hours
Reference Range
By Report
Turnaround
1-2 days
Clinical Use
Test Code
RETIC
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)