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

Vitamin B6 (Pyridoxine), Total
Order Code: VTB6
Order Form: A-1a Miscellaneous Request or IPR Req 		  Commercial "Mail-out" Laboratory
6240 RCP
356-3527 
Specimen
 
Plasma
Collection Medium:
Lavender top tube (EDTA) 


Alternate
Collection Media:


Pink top tube (EDTA sprayed)


Minimum:


Preferred minimum: 1 ml plasma from EDTA tube
                   (approx 3.0 mls whole blood)
Pediatric minimum: 0.2 ml plasma from EDTA tube
                   (approx 0.6 mls whole blood)


Delivery Instructions:


Wrap specimen in aluminum foil to protect from light.  
Deliver to laboratory immediately after collection.


Analytic Time:


5 days upon receipt at reference laboratory


Reference Range:


Adult - 5.0-30.0 ng/mL


Comments:


This assay does not distinguish between pyridoxine, pyridoxamine, and 
pyridoxal forms of the vitamin, and does not detect pyridoxic acid.


Methodology:


Radioenzymatic Assay


CPT Code:


84207


 


See Additional Information:
Specimens Requiring Immediate Delivery




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Updated: 10/24/2007

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.