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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Testosterone, Total, Adult Male

Test Code(s): TESTO / XTTEST

CPT Code(s): 84403

Methodology: Chemiluminescent Immunoassay

Days Performed: Mon-Fri, dayshift.

Turnaround Time: Stat: Not available stat.
Routine: Next working day.


Specimen Requirements

Specimen: Blood

Collection Container: Preferred: Red cap with yellow ring (SST)
Also Acceptable: Red top

Collection Volume: Preferred: 1 mL

Sample Analyzed: Serum

Volume Required: Preferred: 0.5 mL

Specimen Processing: Centrifuge.  If a complete barrier has not formed, transfer cell-free serum to plastic vial.  Refrigerate.

Specimen Transport: Transport specimen to laboratory. Transport with coolant pack if coming from outreach location.

Stability: Ambient: 8 hours
Refrigerated: 48 hours
Frozen: Freeze if sample will not be assayed within 48 hours.


Interpretation

Reference Interval:
 Male:  ng/dL
   0 days - 6 months 75 - 400
   7 months - 11 months 3 - 30
   1 - 6 year 3 - 32
   7 - 12 years 3 - 68
   13 - 17 years 28 - 1110
   18 year and up 241 - 827

       

Test Limitations:

Results may be affected if patient has developed heterophilic antibodies due to exposure to animal based protein products.

Total Testosterone

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