14 days
Liquid chromatography tandem mass spectrometry (LC/MS-MS)
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24-hour urine test for both cortisone and cortisol.
Urine
110 mL preserved urine
Urine Bottle
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.
Instruct the patient to void at 8 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24 Hr. period (ie, 8 AM the next morning) in a plastic bottle containing 1 g boric acid per liter of urine. Mix well. Screw the lid on securely. HCl is also an acceptable preservative. Refrigerate during collection and store refrigerated. The addition of preservative or refrigeration must occur within 4 hours of completion of the collection.
| Temperature | Period |
|---|---|
| Ambient | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |