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.