Urinary Free Cortisol
10 days
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Accredited Laboratory Partner
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24-hour free cortisol test. Gold standard for Cushings screening.
24 hour urine
100 mL aliquot
Plastic urine container
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 |
|---|---|
| Room temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |
| Freeze/thaw cycles | Stable x3 |