Consider the following statements:

1. ELISA test is employed as the first and most basic test for an individual to detect cancer.
2. Almost 50% of human beings have RH (+ve) blood while the remaining have Rh(-ve) blood.

Select the correct statement using the codes given below.
a) 1 only
b) 2 only
c) Both 1 and 2
d) None of the above

Ans-d

Explanation– Elisa means Enzyme-linked immunosorbent assay. It is very very sensitive test to detect antigen or antibodies in the blood/serum. We use enzyme –substrate reaction and the color change due to it as a process to identify antigen or antibody in it. It is very powerful method and can give presence of protein present even in picograms.

Antigens are infectious agents and their materials inside body. This causes body to produce antibodies to fight against them. If we can detect type of antibody in blood or serum we may detect what kind of antigen is there. Elisa comes thus here as very handy in it.

Elisa is not the basic test of cancer. It is basic test of HIV. So statement 1 is wrong.

You can read about cancer detection tests here.