Multiple choice

Radioimmunoassay can detect

  1. antibodies

  2. antigens

  3. complements

  4. antigen-antibody complex

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Radioimmunoassay (RIA) is a very sensitive in vitro assay technique used to measure the concentration of antigens. It can detect antigens up to picogram level.