Laboratory reference method for determining free testosterone in men. Free testosterone is generally adequate for most evaluations of suspected hypogonadism.
Quantitative Equilibrium Dialysis/High Performance Liquid Chromatography-Tandem Mass Spectrometry
Collect between 6-10 a.m.
Serum separator tube or green (sodium or lithium heparin).
Separate from cells ASAP or within 2 hours of collection. Transport 1 mL serum or plasma. (Min: 0.4 mL)
After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 2 months
|Male Free Testosterone, pg/mL|
|18 years and older: 47-244 pg/mL|
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
|Component Test Code*||Component Chart Name||LOINC|
|2003247||Testos Free Adult Male ED/LC-MS/MS||2991-8|
- Direct Dialysis (Testosterone, Free, Adult Males by ED/LC-MS/MS)