12 days (if positive 17 days)
Colorimetry (C), Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
Cause for Rejection: Received Room Temperature
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Evaluate selenium levels; nutritional deficiency or toxicity diagnosis.
Random Urine
3 mL
Urine Bottle Acid Washed Collection: Unpreserved urine should be refrigerated immediately and analyzed within 1 week of collection. Acceptable preservatives include: Trace Metal Free Hydrochloric Acid or Nitric Acid (0.1 mL of 12M acid/10 mL urine).
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 |
|---|---|
| Refrigerated | 30 days |
| Frozen | 12 months |