Blood is drawn from a patient for serological tests for viral disease at the time of onset and again 4 wks. later. The results of the tests are considered diagnostic if the:

Blood is drawn from a patient for serological tests for viral disease at the time of onset and again 4 wks. later. The results of the tests are considered diagnostic if the:








a. first antibody titer is 2x the second
b. first and second antibody titers are equal
c. first antibody is 4x the second
d. second antibody titer is a least 4x the first











Answer: D


Immunology

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