Antibody interference with biochemical tests and its clinical significance.

Antibody interference with routine biochemical tests is becoming increasingly recognized as a cause of spurious results. It is important to recognize these interferences because inappropriate investigation may be instituted in response to the abnormal test result. The present review deals with the various biochemical tests in which antibody interference occurs. The tests include measurement of enzymes, hormones, immunoglobulins, vitamin B12, and a variety of other molecules and ions.