Tests
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Vitamin D 25 - Hydroxy (25-OH)
| Test Name: | Vitamin D 25 - Hydroxy (25-OH) | ||
| Epic Order Code: | LAB535 | ||
| CPT Code: | 82306 | ||
| Specimen(s) Type: | Serum, 1.0 mL | ||
| Acceptable Container(s): |   Tube tops are gold and red. | ||
| Testing Schedule: | Batch testing; performed 2-3 times per week according to volume. | ||
| Turn Around Time: | STAT: NA | ||
| Routine: 48-72 hours | |||
| Collection Information: | No special patient preparation is required. Obtain by standard collection procedures. | ||
| Transport Information: | Deliver to lab immediately. All specimens must be signed into the laboratory. | ||
| Reference Client: | If unable to deliver to the lab within 1 hour, centrifuge the specimen and remove serum from the red cells. Store and transport at 2-8° C within 4 days. If longer storage is required, store and transport at -20° C for up to 24 weeks. | ||
| Causes for Rejection: | Improperly labeled, incorrect container, contaminated, insufficient volume, incorrect/delay in transport, hemolysis. | ||
| Reference Range: | 20 - 100 ng/mL | ||
| Additional Information: | It is commonly agreed that Vitamin D 25-OH is the metabolite to determine the overall Vitamin D status as it is the major storage form of Vitamin D in the human body. The half life of circulating Vitamin D 25-OH is 2-3 weeks. | ||