Wisewire
HIA
Modification of work by Evan Burkala
In this HIA, serum containing antibodies to influenzavirus underwent serial two-fold dilutions in a
microtiter plate. Red blood cells were then added to the wells. Agglutination only occurred in those wells where the
antibodies were too dilute to neutralize the virus. The highest concentration at which agglutination occurs is the titer of the antibodies in the patient’s serum. In the case of this test, Sample A shows a titer of 128, and Sample C shows a titer of 64.
HIA
Modification of work by Evan Burkala
In this HIA, serum containing antibodies to influenzavirus underwent serial two-fold dilutions in a
microtiter plate. Red blood cells were then added to the wells. Agglutination only occurred in those wells where the
antibodies were too dilute to neutralize the virus. The highest concentration at which agglutination occurs is the titer of the antibodies in the patient’s serum. In the case of this test, Sample A shows a titer of 128, and Sample C shows a titer of 64.