Vitamin D, 25-Hydroxy : ARUP Lab Tests

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Vitamin D, 25-Hydroxy : 0080379

Mnemonic: VIT D 25

Methodology:	Chemiluminescent Immunoassay
Performed:	Sun-Sat
Reported:	1-2 days
Specimen Required:	Collect: One 4 mL serum separator tube. Also acceptable: lavender (EDTA), pink (K₂EDTA), or green (sodium or lithium heparin). Storage/Transport Temperature: 1 mL serum or plasma at 2-8°C. (Min: 0.3 mL) Submit specimen in an ARUP Standard Transport Tube. Unacceptable Conditions: Grossly hemolyzed or lipemic specimens. Stability (collection to initiation of testing): After separation from cells: Ambient: 3 days; Refrigerated: 1 week; Frozen: 6 months

Reference Interval: 0-17 years:Deficiency: less than 20 ng/mL Optimum level: greater than or equal to 20 ng/mL* *(Wagner CL et al. Pediatrics 2008; 122: 1128-38.) 18 years and older: Deficiency: Less than 20 ng/mL Insufficiency: 20-29 ng/mL Optimum Level: 30-80 ng/mL Possible Toxicity: Greater than 150 ng/mL
Interpretive Data:	This assay accurately quantifies the sum of vitamin D₃, 25-Hydroxy and vitamin D₂, 25-Hydroxy.
CPT Code(s):	82306
Cross References:	D, 25-Hydroxy, Vitamin

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