Test directory: Testosterone, Total and Free

Ordering Code 297
Test Name Testosterone, Total and Free
Alias Testosterone Index
Testosterone, Dialyzable
Testosterone, Fractionated
Testosterone, Total and %Free
Testosterone, Total MS & Testosterone, Free (Dialysis)
Preferred Specimen Serum
Preferred Container Plain (Red)
Other Specimen/Container Plasma in Lithium Heparin (Green),
Plasma in Sodium Heparin (Green),
Serum in SST (Gold)
Optimum Volume 2 mL
Collection Instructions Do NOT combine with other tests
** Have this test NOT be shared with any other tests even within its OWN worklist. **
Draw 2 tubes.
Handling Instructions Needs own aliquot
Centrifuge and aliquot SST within 48 hours of collection.
Transport Requirements Oahu: Ambient
Airline: Frozen
Specimen Stability Ambient: 7 Days
Refrigerated: 21 Days
Frozen: 2 Years
Rejection Criteria Grossly hemolyzed, Grossly lipemic.
Avail. Stat NO
Analytic Time 10 Days
Methodology Liquid Chromatography Tandem Mass Spectrometry, Tracer
Equilibrium Dialysis, Calculation
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of May 20, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Testosterone, Total ALL See report.
Testosterone, Free ALL See report.