Testosterone Total and Free (with SHBG)
UFHPL Epic order code: LAB839
Serum must be separated from cells within 45 minutes of venipuncture. Send serum in a plastic transport tube.
Important: Indicate the patient's age and gender when ordering this test.
Type: Serum only, FROZEN
- If a red-top tube is used, transfer the separated serum to a plastic transport tube.
Sample Volume: 2 mL
- Stability: Room temperature up to 2 days
- Refrigerated up to 2 days
- Frozen up to 600 days
This test is used to evaluate hirsutism and masculinization in women and testicular function in clinical states where the testosterone-binding proteins may be altered (obesity, cirrhosis, thyroid disorders).
A pediatric reference interval has not been established for the direct free testosterone test.
High-pressure liquid chromatography (HPLC) tandem mass spectrometry; equilibrium dialysis; electrochemiluminescence immunoassay (ECLIA)
Monday - Friday