17 days
High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)
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Urinary melatonin excretion. Assesses circadian rhythm disturbances.
Random Urine, protected from light
1 mL
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.
Protected from light
| Temperature | Period |
|---|---|
| Room temperature | 30 days |
| Refrigerated | 30 days |
| Frozen | 30 days |