9 days
Equilibrium Dialysis
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Measures the active, unbound testosterone in the blood using equilibrium dialysis. It is particularly useful in assessing androgen status in cases where total testosterone levels may be misleading, such as in conditions affecting sex hormone-binding globulin (SHBG).
Serum
2 mL
Red-top tube or gel-barrier tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Frozen | 600 days |