Testosterone by Immunoassay, Adult Male TSTR
One 5 mL gold (SST) top tube. Heparinized plasma also acceptable.
1 mL serum at 2-8ºC (Min: 0.5 mL).
For females and for children under 14 years, choose Testosterone by LC/MS for more sensitive testing.
Ambient: 8 hours; Refrigerated: 7 days; Frozen: 1 month
Results of this test may be falsely elevated in patients taking over-the-counter biotin supplements.
|Preferred Specimen Collection Device(s)|