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| 43370:VITAMIN D, 25-HYDROXY | |||||||||
| Alias Names: | Vit D | ||||||||
| Methodology: | Chemiluminescent Immunoassay (CLIA) | ||||||||
| Edit Date: | 4/19/2010 | ||||||||
| Performed: | Daily | ||||||||
| Released: | Same day as tested | ||||||||
| CPT Code: | 82306 | ||||||||
| Specimen Collection Details | |||||||||
| Collection: | One 7.5 mL serum separator tube (SST). Also acceptable: One 4 mL lavender top tube (EDTA) or one 4.5 mL light green plasma separator tube (PST). | ||||||||
| Handling: | Allow to clot, centrifuge and separate serum or plasma from cells as soon as possible. | ||||||||
| Stability: | 5 days refrigerated or 3 months frozen at -20° C. Avoid repeated freeze/thaw cycles. | ||||||||
| Standard Volume: | 1 mL serum or plasma. | ||||||||
| Minimum Volume: | 0.5 mL serum or plasma. | ||||||||
| Transport: | Refrigerated; or frozen on dry ice. | ||||||||
| Rejection Criteria: | Grossly hemolyzed or lipemic specimen. | ||||||||
| Reference Range: | |||||||||||||||||||
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<10 ng/mL
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Severe deficiency
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10-19 ng/mL
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Mild-moderate deficiency
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20-31 ng/mL
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Hypovitaminosis
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32-80 ng/mL
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Optimum levels
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>100 ng/mL
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Possible toxicity
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