CPT Code


Specimen Type


Container Type

Serum Separator Tube (SST)/Yellow


Room Temperature, 8 hours; 2-8°C, 7 days;

Handling Instructions

Allow to clot for 30 mins, centrifuge within 2 hours

Clinical Notes

Testosterone is the hormone responsible for controlling fertility and the development of sperm in men. Testosterone also plays an important part in the development of male sex characteristics such as a deeper voice and certain patterns of muscle development and hair growth. In women or anyone with ovaries, testosterone impacts overall growth as well as development of muscle and reproductive tissue.

Performing Lab

Principle Laboratory - Dallas
6210 N Belt Line Rd
Irving, TX 75063

Principle Laboratory - Houston
16840 Buccaneer Ln
Suite 281
Houston, TX 77058