Test Directory

Testosterone Free and Total, Adult Male

Print this page

Updated Test Information:

  Specimen Collection / Processing Instructions
Last Updated Jun 26, 2020, 4:32 pm
Previous Value SST - SST - Separate serum or plasma from cells within 45 minutes of collection. If a red-top tube or green-top tube is used, transfer separated serum or plasma to a plastic transport tube.
New Published Value Separate serum or plasma from cells within 45 minutes of collection. If a red-top tube or green-top tube is used, transfer separated serum or plasma to a plastic transport tube.
  Reference Range
Last Updated Jun 26, 2020, 4:32 pm
Previous Value
New Published Value
Test Description
Testosterone Free and Total, Adult Male
Synonym(s)

Free testosterone

Test ID
FREET
General Information

Albumin, SHBG, Testosterone, Free Testosterone (Calculated)

Specimen Type

Serum

Alternate Specimen Type

Red top, Li-heparin plasma

Specimen Requirements

SST

Specimen Collection / Processing Instructions

Separate serum or plasma from cells within 45 minutes of collection. If a red-top tube or green-top tube is used, transfer separated serum or plasma to a plastic transport tube.

Stability

5 days at 20‑25 °C
7 days at 2‑8 °C
4 months at -20 ˚C

Unacceptable Specimen Conditions

gross hemolysis; lipemia; improper labeling

Methodology

Electrochemiluminescence immunoassay

Estimated TAT

0-2 Days

Testing Schedule

M-F

CPT Code(s)

82040
84270
84403

Minimum Sample Volume

0.5 mL

Reference Range

18–69 years 35.0–155.0 pg/mL
70–89 years 30.0–135.0 pg/mL

Performing Lab

Incyte Diagnostics

LOINC Code(s)

1751-7, 13967-5, 2986-8, 2991-8