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FOB12
VITAMIN B12 AND FOLATE, SERUM

Test Code FOB12 
Test VITAMIN B12 AND FOLATE, SERUM 
Methodology Electrochemiluminescence Immunoassay (ECLIA) 
Description Useful for detecting deficiencies associated with macrocytic anemias.
Includes B12 and folate determination.

No sample should be collected on patients receiving therapy with high biotin doses (i.e. biotin therapy for Multiple Sclerosis or oncology patients; skin, hair and nail supplements, or multivitamins containing > 5 mg/day) until at least 12 hours after the last biotin administration. If unsure, or if the clinical picture does not fit the results please contact the laboratory . We have methods to check for biotin interference as well as for any other interferences and for the accuracy of the results.

Biotin interference would falsely increase the result of this assay. 

Specimen Draw blood in either a plain, red-top tube or serum gel tube. (HEMOLYZED SPECIMEN IS NOT ACCEPTABLE.) Spin down, separate and send 1.0 mL (minimum volume: 0.5 mL) of serum refrigerated in plastic vial.
AVOID PROLONGED EXPOSURE TO LIGHT (Normal storage in walk-in refrigerator at Scarborough facility is acceptable) 
Reference Values VITAMIN B12
211 - 946 pg/mL

FOLATE
4.8 - 20.0 ng/mL 

Analytic Time 1 Day 
Day(s) Test Set Up Monday through Sunday 
CPT Code(s) 82607  Vitamin B12
82746  Folate