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B12
VITAMIN B12 ASSAY, SERUM

Test Code B12 
Test VITAMIN B12 ASSAY, SERUM 
Methodology Electrochemiluminescence Immunoassay (ECLIA) 
Description Useful for detecting B12 deficiencies due to low vitamin B12 intake, malabsorption, or abnormalities associated with altered B12 transport into the body; aiding in the diagnosis of megaloblastic anemia and certain neurological abnormalities.

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. Spin down, separate and send 1.0 mL (minimum volume: 0.5 mL) of serum refrigerated in plastic vial. PROTECT SPECIMEN FROM PROLONGED EXPOSURE TO LIGHT. 
Reference Values 211 - 946 pg/mL 
Analytic Time 1 Day 
Day(s) Test Set Up Monday through Sunday 
CPT Code(s) 82607