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TESTOSTERONE FREE, CALCULATED, SERUM

Synonym(s):
Lab Section Category
View write-up
Specimen Required

​3 mL plain blood

Method

Calculated using Vermeulen Equation from measured parameters:

Testosterone total (serum), SHBG (serum) and Albumin (serum)

Reference Interval / Value

≥ 13 yrs : M 0.180 – 0.994 nmol/L;  F: 0.003 - 0.058 nmol/L

Turnaround Time

​Mean = 4 hrs, Range: 3 – 5 hrs

Day(s) Test Set up

​Daily

Change History Notes

  • 01 Apr 2020 09:00 AM

    ​Method and reference intervals are updated on 01 Apr 2020.

Back: Pathology Laboratory Services

Last Updated - 13 Jun 2025