Testosterone, Total, Males (Adult), Immunoassay

What it measures

• Testosterone, Total, Males (Adult), IALOINC 2986-8

Before the visit

Due to changes in testosterone levels throughout the day, two morning (8:00-10:00 a.m.) specimens obtained on different days are recommended by The Endocrine Society for screening.

Specimen

Specimen

1 mL serum

Minimum volume

0.5 mL

Container

Serum separator tube (SST)

Temperature

Room temperature

Dietary supplements containing biotin may interfere in assays and may skew results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation. Note: This assay should be performed on adult (≥18 years) males.

Turnaround

Set up: Tues-Sat (Night shift); Report available: 4 days

Billing

CPT 84403