Test directory: Testosterone, Free

Ordering Code 4198
Test Name Testosterone, Free
Alias Testosterone, Free, LC/MS/MS
Preferred Specimen Serum
Preferred Container Plain (Red)
Other Specimen/Container Plasma in Lithium Heparin (Green), Plasma in Sodium Heparin (Green), SST (Gold)
Optimum Volume 3 mL
Handling Instructions Stability applies to SST aliquoted within 48 hours
Transport Requirements Oahu: Ambient
Airline: Ambient
Specimen Stability Ambient: 7 Days
Refrigerated: 7 Days
Frozen: 2 Years
Rejection Criteria Grossly hemolyzed, Grossly lipemic
Avail. Stat NO
Analytic Time 6 Days
Methodology Chromatography/Mass Spectrometry, Calculation,
Immunochemiluminescence Assay
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of June 29, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Testosterone, Free ALL See report.