GROUP I Test GROUP II Principle (P) Direct agglutination test (1) Measures antibody titres after soluble antigens are attached to inert particles and incubated with antibodies. (Q) Passive agglutination (2) Detects blocking-type antibodies, globulins and complement that are attached to red cell antigens. (R) Haemagglutination inhibition test (3) RBCs coated with homologous antigens added to antibodies incubated with soluble antigens (S) Coomb's test (4) RBC antigen incubated with antibodies and antibody titre visually examined

Correct Answer is : P-4, Q-1, R-3, S-2

Graduate Pharmacy Aptitude Test (GPAT) 2008 Solved Paper

Question : 69 of 85

Marks: +1, -0

GROUP I Test	GROUP II Principle
(P) Direct agglutination test	(1) Measures antibody titres after soluble antigens are attached to inert particles and incubated with antibodies.
(Q) Passive agglutination	(2) Detects blocking-type antibodies, globulins and complement that are attached to red cell antigens.
(R) Haemagglutination inhibition test	(3) RBCs coated with homologous antigens added to antibodies incubated with soluble antigens
(S) Coomb's test	(4) RBC antigen incubated with antibodies and antibody titre visually examined

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