ARUP's Laboratory Test Directory

Testosterone Free and Total by ED/LC-MS/MS (Free) and LC-MS/MS (Total), Adult Males : 2004246

Mnemonic: TE F&T ED

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 serum or plasma 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

Male Total Testosterone, ng/dL
18-39 years: 300-1080 ng/dL
40-59 years: 300-890 ng/dL
60 years and older: 300-720 ng/dL

Interpretive Data:

See Compliance Statement B: www.aruplab.com/CS
CPT Code(s): 84402; 84403
Cross References: Direct dialysis (Testosterone Free & Total by ED/LC-MS/MS (Free) and LC-MS/MS (Total), Adult Males), Total and Free (Testosterone Free & Total by ED/LC-MS/MS (Free) and LC-MS/MS (Total), Adult Males)