Preferred amount: 1.0 mL Serum
Minimum amount: 0.5 mL Serum or
Preferred amount: Full tube of Whole Blood
Minimum amount: 0.5 mL whole blood
Heterophilic antibodies in human serum can react with reagent immunoglobulins, interfering with in vitro immunoassays. Patients routinely exposed to animals or to animal serum products can be prone to this interference and anomalous values may be observed.
Diagnostically used in the quantitative determination of autoantibodies against thyroid peroxidase.