Vitamin D Profile [Referral]

Referral tests are not performed at TVMDL; a processing and shipping fee will apply.

Measurement of Vitamin D to determine toxicity or deficiency.  The profile includes PTH, ionized calcium, and 25-hydroxyvitamin D. This assay will detect metabolites of cholecalciferol (rat poisons, vitamin D supplements), but it will not detect toxicity due to calcitriol (Rocaltrol) or calcipotriene (Dovonex – anti-psoriasis cream). 

1.5 mL serum

12 hour fasted sample is required. Freeze prior to shipping. Avoid hemolysis. Heparinized plasma (not EDTA) is also acceptable.

Remove from red cells and place sample in an additive free transport tube.

Label all samples. Ship overnight on cold packs or dry ice so sample arrives frozen.

This test is performed at the Michigan State University Veterinary Diagnostic Laboratory (MSUVDL) in Lansing, MI. Prices listed for tests performed outside TVMDL may not include referral lab accession fees and are subject to change without notice. A processing and shipping fee is added to all referral tests. Turnaround times vary depending on shipping time and the referral lab’s schedule.If desired, MSUVDL can provide a written interpretation of results for $15.