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Test Code LAB124 Testosterone

Important Note

This test is also known as Total Testosterone.

Additional Codes

CPT Code: 84403

Performing Laboratory

TidalHealth Peninsula Regional - Core Laboratory: Chemistry

Specimen Requirements

Plasma
Draw blood in a green-top (lithium heparin) tube is preferred; however a dark green-top (sodium heparin) tube is also acceptable.  (Serum and EDTA Plasma is not acceptable.) Spin down and separate 1 mL of plasma within 2 hrs.  Test within 8 hrs at room temp.  Freeze if not tested within 8 hrs. 

Reference Values

Male:

20-50 years: 249.0-836.0 ng/dL

>50 years: 193.0-740.0 ng/dL

Female:

20-50 years: 8.4-48.1 ng/dL

>50 years: 2.9-40.8 ng/dL

Method

Electrochemiluminescence immunoassay (ECLIA)