Testosterone, Free and Total by LC/MS/MS, Females and Children TSTLCF
|Method(s)||Liquid Chromatography-Tandem Mass Spectrometry and Immunoassay|
Total Testosterone, SHBG, Free Testosterone
One 5 mL gold (SST) top tube.
1 mL serum at 2-8ºC.
Specimen should be collected between 6 and 10 a.m.
Ambient: 24 hours, Refrigerated: 14 days (3 days in contact with separator gel). Frozen storage is not recommended.
|Schedule||Mon, Thurs, reported Tues, Fri|
|CPTCode||84403 Total testosterone, 84270 SHBG|
The test is suggested for women and children due to the improved sensitivity of LC/MS/MS analysis of testosterone.
The concentration of free testosterone is derived from a mathematical expression based on the constants for the binding of testosterone to sex hormone binding globulin and albumin.
|Preferred Specimen Collection Device(s)|