Testosterone, Free, Direct with Total Testosterone

Additional Information:

UFHPL Epic Order Code: LAB123140103


  • Free Testosterone, Direct and Total

CPT Code(s):

84402, 84403

Specimen Requirements:

Specimen: Serum

Volume: 2 mL

Container: Red-top tube or gel-barrier tube

Collection: If a red-top tube is used, transfer separated serum to a plastic transport tube.

Storage Instructions: Room temperature


Evaluate hirsutism and masculinization in women; evaluate testicular function in clinical states where the testosterone binding proteins may be altered (obesity, cirrhosis, thyroid disorders). See individual test descriptions for more information.


Free: Direct analog enzyme immunoassay (EIA)
Total: electrochemiluminescence immunoassay (ECLIA)


1-3 days