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  • Vitamin D 25 - Hydroxy (25-OH)

    Test Name:Vitamin D 25 - Hydroxy (25-OH)
    Epic Order Code:LAB535  
    CPT Code:82306
    Specimen(s) Type:Serum, 1.0 mL
    Acceptable Container(s):
    Testing Schedule:Batch testing; performed 2 - 3 times per week according to volume.
    Turn Around Time:STAT: NA
     Routine: 48 - 72 hours
    Collection Information:No special patient preparation is required. Obtain by standard collection procedures.
    Transport Information:Deliver to lab immediately. All specimens must be signed into the laboratory.
    Reference Client:If unable to deliver to the lab within 1 hour, centrifuge the specimen and remove serum from the red cells. Store and transport at 2-8° C within 4 days. If longer storage is required, store and transport at -20° C for up to 24 weeks.
    Causes for Rejection:Improperly labeled, incorrect container, contaminated, insufficent volume, incorrect/delay in transport, hemolysis.
    Reference Range:20 - 100 ng/mL
    Additional Information:It is commonly agreed that Vitamin D 25-OH is the metabolite to determine the overall Vitamin D status as it is the major storage form of Vitamin D in the human body. The half life of circulating Vitamin D 25-OH is 2 - 3 weeks.