5025 Testosterone, Free + Total

Specimen:

Collect:

One 10 mL Red Top

Submit:

1 mL (Min:0.5 mL) Serum. Submit Refrigerated. Submit in a Standard Transport Tube.

Special Handling:

Allow specimen to clot completely at room temperature
Avoid Repeated Freeze/Thaw Cycles
Separate from cells ASAP
Specimen should be collected between 6-10 a.m.

Rejection Criteria:

Use of separator tubes

Stability:

Ambient: Unacceptable; Refrigerated: 2 Day(s); Frozen: 2 Month(s); Incubated: Unacceptable

Methodology:

Chemiluminescence

Performed:

Mon-Fri

Reported:

1-3 Day(s)
The concentration of free testosterone is derived from a mathematical expression based on the constant for the binding of testosterone to sex hormone binding globulin.

CPT Codes:

84270 - Sex Hormone Binding Globulin

84403 - Testosterone, Total

Interpretive Data:

Please see report for interpretive data.

Components:

2179 - TESTOSTERONE	5020 - FREE TESTOSTERONE
5023 - %FREE TESTO	5024 - SEX HB GLOBULIN
1021 - ALBUMIN