Negative Hemagglutination Inhibition
•
U
Step 1 - in a
negative
test
•
U
Step 2 - in a
negative
test
•
Reagent Ab
=
s
•
+
•
Pt
=
s serum
•
no Ag-Ab reaction
•
+
•
reagent Ag-bound
particles
•
agglutination of reagent ag-
bound particles
