TESTOSTERONE, FREE

Test Documentation
Specimen Required
Draw blood in a SST. Centrifuge, separate and send 1.0 mL serum (0.3 mL minimum) frozen in a screw-capped plastic vial.

Alternate Specimen
Serum: Red-top

Rejection Criteria
Plasma, lipemic, hemolyzed and icteric specimens

Methodology
Radioimmunoassay

Stability
Room Temperature: Unacceptable; Refrigerated: 24 hours; Frozen: 14 days

Reference Range
Male:
   Age   Range  
   20-50 years:   5.1-41.5 pg/mL  
Females:
   Reproductive Age:   <2.7 pg/mL  
   Post Menopausal:   <2.1 pg/mL  

Performed
Monday-Friday

Turnaround Time3 days
Test CodeTESF
CPT-4 Code (s)
84402
LOINC Codes
2991-8

Warde
Medical
Laboratory