Sign in →

Test Code TESFAM Testosterone, Free, Equilibrium Dialysis, Male

Important Note

Test results delayed due to high testing volume. 

Laboratory reference method for the direct measurement of free testosterone. Not recommended when low concentrations of free testosterone, such as those found in children and cisgender females, are expected. 

Additional Codes

2003246
 

Specimen Type

Blood

Preferred Collection Container

SST

Acceptable Collection Container

SST, GRN-PST
 

Collection Instructions

Separate from cells ASAP or within 2 hours of collection

Collection Volume

2.0 mL

Minimum Collection Volume

1.0 mL

Testing Volume

0.4 mL

Rejection Criteria

EDTA plasma.

Specimen Storage and Stability

After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 2 months

Transport

Refrigerated

STAT Availability

No

Turn Around Time

3-7 days

Lab Department

Referred Testing

CPT

84402

Methodology

Quantitative Equilibrium Dialysis (ED)/High Performance Liquid Chromatography-Tandem Mass Spectrometry

Aliases

Direct Dialysis (Testosterone, Free, Adult Males by ED/LC-MS/MS)

Day(s) Performed

Sunday through Saturday

Performing Laboratory

ARUP Laboratories

Epic Code

LAB173A

LOINC

2991-8