|Test List||A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #|
Testosterone, Free and Total, LC/MS/MSTest Code
Total Testosterone, Free Testosterone (calculated)
0.9 mL serum collected in a red-top tube (no gel)
Other Acceptable Specimens
Heparinized plasma (green-top) tube
Collect blood in a no additive red-top vaccutainer. Allow blood to clot. Centrifuge and pipette serum into a plastic vial. Do not send serum collected in a serum separator tube (SST).
Plastic screw-cap vial
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 2 years
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Serum Separator Tube (SST®)
Calculation (CALC) • Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS) • Tracer Equilibrium Dialysis
See Laboratory Report
Helpful in assessing testicular function in prepubescent hypogonadal males and in managing hirsutism, virilization in females.