ARUP's Laboratory Test Directory

Testosterone, Free, Adult Males by ED/LC-MS/MS : 2003246

Mnemonic: FREE T TMS

Methodology: Quantitative Equilibrium Dialysis/High Performance Liquid Chromatography-Tandem Mass Spectrometry
Performed: Tue, Fri
Reported: 1-6 days
Specimen Required: Patient Prep: Collect between 6-10 a.m.

Collect: Serum separator tube or green (sodium or lithium heparin).

Specimen Preparation: Separate from cells ASAP or within 2 hours of collection. Transport 1 mL serum or plasma. (Min: 0.4 mL)

Storage/Transport Temperature: Frozen.

Unacceptable Conditions: EDTA plasma.

Stability (collection to initiation of testing): After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 2 months
Reference Interval:
Male Free Testosterone, pg/mL
18 years and older: 47-244 pg/mL

Interpretive Data:

See Compliance Statement B: www.aruplab.com/CS
CPT Code(s): 84402
Cross References: Direct Dialysis (Testosterone, Free, Adult Males by ED/LC-MS/MS)