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19958: Testosterone, Total (Males), Immunoassay Print View
Testosterone, Tot,MaleAdult IA  Male < 18 years: Call Client Services
Male >= 18 years: 250 - 827 
ng/dL 

PRIMARY
1 Serum 1 (0.5) mL   Frozen - 21 Day(s)/Refrigerated - 7 Day(s)/Room Temperature - 5 Day(s)  
ALTERNATE

Testosterone circulates almost entirely bound to transport proteins; normally less than 1-2 % is free. The principal transpor t protein for testosterone is know as sex hormone binding globulin (SHBG) or testosterone-estradiol binding globulin (TeBG). Testosterone measurements are used to assess erectile dysfunction, infertility, gynecomastia, and osteoporosis and assess hormone replacement therapy.

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 (> or = 18 years) males.
Setup Schedule
Tuesday-Saturday

Reported (Analytical Time)
Same day

CPT Code
84403

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
Method: Immunoassay
Transport Temperature: Room temperature
Reject Criteria: Grossly icteric

Specimen Note: This assay should be performed on adult (> or = 18 years) Males.

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






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For test information, please call Client Services at 800-421-4449.

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