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Catalog ID 1,25D 1,25-OH2 Vitamin D

Important Note

This test is NOT for Vitamin D deficiency screening. The correct test for Vitamin D deficiency screening and routine monitoring is 25-OH Vitamin D.

Specimen Requirements

1.5 mL of blood drawn in gold top tube preferred. Red top tube also acceptable.

Serum should be separated as soon as possible. Serum is stable room temperature for 7 days, for 14 days refrigerated at 2-8° C, and frozen <-20° C for long term storage.

Reference Range

19.9 - 79.3 pg/mL

Causes for Rejection

Wrong tube, insufficient specimen, gross hemolysis, gross lipemia

Turn-Around-Time

Performed Thur & Fri - day shift only

Performing Laboratory

Immunology Lab - AD3301 , 706-721-3378

CPT Code

82652

Interpretative Information

Heterophile antibodies can interfere with this test. This test will also cross-react with Zemplar (paricalcitol), therefore it should not be used to monitor therapy with this medication.