A Measure of Antibody Level in the Plasma Is

Question

A measure of antibody level in the plasma is
A) the primary response.
B) the secondary response.
C) antigen concentration.
D) body temperature.
E) the antibody titer.

Accepted Answer

The measure of antibody level in the plasma is called the antibody titer. This is a quantitative assessment of the concentration of antibodies in a serum sample, which reflects the immunological response to an antigen. The antibody titer is commonly used to diagnose and monitor infectious diseases, vaccine efficacy, and immune status. Therefore, option E is the correct answer. The other options are not related to the measurement of antibody level in the plasma.