Question
Microbiology Question on Immune System
A patient was suspected of having brucellosis. Serum sample was sent for a standard agglutination test. It came negative initially but after dilution of the serum sample, the test was positive. What could be the reason for the initial negative test?
A
Prozone
B
Postzone
C
Complement inactivation
D
Antigen antibody complexes
Answer
Prozone
Explanation
Solution
The correct option is (A) :Prozone