1,25 Dihydroxy Vitamin D, Pediatric Only
| Sunquest Code: | DHVDP | ||
| Epic Code: | LAB8042 | Epic Name: | 1,25 Dihydroxy Vitamin D, Pediatric |
| Synonyms: | 1, 25 Dihydroxycholecalciferol; 1,25 Dihydroxyvitamin D3; Vitamin D; Calcitriol | ||
| Methodology: | Extraction/Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) | ||
| Turnaround Time: | Testing is performed Mon-Fri at approximately 3 pm. Results are reported within 2-4 days. | ||
| Compliance: | This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration. |
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Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 3 mL |
| Minimum\Peds Volume: | 2.6 mL |
| Container: | Red or gold (gel) [Alternate Containers: Red (no gel)] |
| Patient Preparation: | Fasting (4-hour preferred but not required) |
| Causes for Rejection: | Grossly hemolyzed samples. |
Processing and Shipping
| Specimen Processing: | Centrifuge and aliquot 1.5 mL, 1.2 mL minimum. Store at room temperature or refrigerated (preferred). |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | 1 week at room temperature or refrigerated (preferred); 28 days frozen |
| Test Performed at or Referral Lab | Lab Sendouts (Mayo Medical Laboratories) |
| Referral Lab number: | DHVD |
Interpretive
| Reference Range: |
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| Use: | As a second-order test in the assessment of vitamin D status, especially in patients with renal disease.
Investigation of some patients with clinical evidence of vitamin D deficiency (e.g. vitamin D-dependent rickets due to hereditary deficiency of renal 1-alpha hydroxylase or end-organ resistance to 1,25 dihydroxyvitamin D). Differential diagnosis of hypercalcemia. |
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