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| Title | VITAMIN A (RETINOL) |
| Specimen Requirement | <p>PATIENT PREP: 12-14 HOUR FASTING</p>
<p>Draw SST and <strong>protect from light </strong>while tube clots. Spin, separate serum from cells within 2 hours, and send 1.0 mL <strong>serum frozen </strong>in an<strong> amber screw-capped plastic vial.</strong> Indicate"serum/SST" on transport vial. Contact lab for dry ice for shipment.</p> |
| Methodology | |
| Stability | Frozen: 2 months |
| Reference Range | By Report* |
| Turnaround | 1-3 DAYS |
| Clinical Use | <p>Differential diagnosis of hypervitaminosis A. A combination of a low serum carotene level and a low vitamin A suggests inadequate vitamin A nutrition.</p> |
| Test Code | VITA |
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