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: Mon, Thu
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

CPT Code(s): 84402
Cross References: Direct Dialysis (Testosterone, Free, Adult Males by ED/LC-MS/MS)
 
 

 

 

 
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