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Test Code Lab124 Testosterone, Total

Performing Laboratory

Barnes-Jewish Hospital Laboratory

Methodology

Electrochemiluminescence Immunoassay (ECLIA)

Literature References:

1. Package insert: Testosterone II. Roche Corporation 02/2021

Specimen Requirements

Specimen Type: Plasma

Container/Tube:  Mint-green top (lithium heparin)

Specimen Volume: Full tube

 

Additional Information:

1. Patient’s age and sex are required.

2. This assay is sensitive to 5 ng/dL.

Day(s) Test Set Up

Monday through Sunday
Turnaround Time:
STAT: not available

Routine: results available the day of testing

Test Classification and CPT Coding

84403

Reference Values

Males:

20-49 years: 249 - 836 ng/dL

 ≥50 years: 193 - 740 ng/dL


Females:

21-49 years: 8.4 - 48.1 ng/dL

≥50 years: 2.9 - 40.8 ng/dL

Literature References:

1. Package insert: Testosterone II. Roche Corporation 02/2021

Specimen Transport Temperature

Ambient

Additional Information

For BJH Laboratory Use Only

Alternate Tube(s):

Red-top tube

Dark green tube (Li Hep)

Purple top (K2 & K3 EDTA)

Separator gel tube is acceptable


Analyte Stability:

See Analyte Stability Chart in Special Instructions.

Laboratory Processing Instructions:

Test performed in BJH Core Lab. Processed and aliquoted by Cobas 8100 automated line for delivery to the Cobas 8000. Completed specimens are stored refrigerated for 5 days.

Special Instructions

LOINC Code Information

Name LOINC Code
Testosterone, Total, Plasma 2986-8