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IFAB / IFBA-M
INTRINSIC FACTOR BLOCKING ANTIBODY, SERUM

Test Code IFAB / IFBA-M 
Test INTRINSIC FACTOR BLOCKING ANTIBODY, SERUM 
Methodology Competitive Binding Immunoenzymatic Assay 
Description Useful in confirming the diagnosis of pernicious anemia. 
Specimen Draw blood in either a plain, red-top tube or serum gel tube. Spin down and send 1.0 mL (minimum: 0.3 mL) of serum FROZEN in plastic vial.

PRECAUTIONS: This test should not be ordered on patients
who have received a vitamin B(12) injection
within the last 2 weeks. 

Reference Values Negative 
Analytic Time 2 Days 
Day(s) Test Set Up Monday through Saturday 
CPT Code(s) 86340