The University of Iowa (UIHC)
Department of Pathology
LABORATORY SERVICES HANDBOOK


Vitamin D (1,25 Dihydroxy)
Order Code: VD125S
Epic Lab Code: LAB536
Order Form: A-1a Miscellaneous Request or Epic Req
  Commercial "Mail-out" Laboratory
6240 RCP
356-3527
Specimen:
Serum
Collection Medium:
Red top tube
Alternate
Collection Media:
Lavender top tube (EDTA), Pink top tube (EDTA sprayed)
Minimum:
Preferred Minimum: 1.0 mL serum
Absolute Pediatric Minimum: 0.8 mL serum
Delivery Instructions:
Deliver to laboratory immediately after collection.
Analytic Time:
2 working days (upon receipt)
Reference Range:
15 - 75 pg/mL
Interpretive Data:
Measurement of "Vitamin D (1,25-dihydroxy)" is intended for workup of 
complex vitamin D issues in the assessment of hypercalcemia, assessment 
of vitamin D in patients with renal failure, and certain malignancies.  
This assay is NOT intended for routine assessment of Vitamin D 
nutritional status (see "Vitamin D, 25-Hydroxy, Plasma").
Methodology:
Radioimmunoassay
CPT Code:
82652
 
See also:
Vitamin D, 25-Hydroxy, Plasma
 
See Additional Information:
Specimens Requiring Immediate Delivery

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Updated: 09/24/2009

Note: The information contained in this handbook is for use by personnel of University of Iowa Health Care. No other use is implied or intended.