1,25 Dihydroxy Vitamin D, Adult - Preferred for evaluating hypercalcemia or renal failure

Abbrev Code:VIT125   
Order Code:LAB6615Order Name:1,25 Dihydroxy Vitamin D
Synonyms:1, 25 Dihydroxycholecalciferol, Vitamin D
Methodology:Chemiluminescent immunoassay
CPT Codes: 82652 x1
Turnaround Time:Testing is performed 2 times per week. Results are reported 3-7 days.
Special Instructions:Verify with the physician whether they are diagnosing Vitamin D deficiency or evaluating the patient for hypercalcemia or renal failure. Order VITD (LAB535) for deficiency.

Collection Instructions

Optimal Volume:1 mL
Minimum\Peds Volume:0.8 mL
Container:Red or gold (gel)
Alternate Containers: Green (lithium heparin, gel), Purple (EDTA), Red (no gel)
Causes for Rejection:Grossly hemolyzed, icteric or lipemic samples as well as samples containing particulate matter.

Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1 mL, 0.3 mL minimum. Store at room temperature or refrigerated.
Shipping Instructions:Ship at refrigerated temperature.
Stability:Stability: Samples are stable for 1 week at room temperature, 2 weeks refrigerated and 6 months frozen.
Test Performed at or Referral Lab UM Specialty Core/Prot/Endo (Liaison D) 


Reference Range:Adult:  19.9 - 79.3 pg/mL

Pediatric reference ranges are not available; order 1,25 Dihydroxy Vitamin D to Mayo-Pediatric with same name for pediatric patients.
Use:Vitamin D testing is not covered by government payers for screening. This test does not need to be ordered in combination with Total 25-Hydroxyvitamin D. This test is indicated for patients with renal failure, unexplained hypercalcemia or hypercalciuria (suspected granulomatous disease or lymphoma), suspected genetic childhood rickets or suspected tumor-induced osteomalacia. The recommended test for diagnosing Vitamin D deficiency is Total 25-Hydroxyvitamin D.

Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact:
[email protected] for TestID: 1188"