Serology I Serology I Serology is the study of blood serum and other bodily fluids, focusing on the identification of antibodies, antigens, and immune responses to infections, diseases, or foreign substances. It is commonly used in the diagnosis of various infections, immune disorders, and blood group typing. 1 / 10 In serology, which technique involves the use of enzyme-labeled antibodies for the detection of specific antigens? Western Blot Immunofluorescence ELISA (Enzyme-Linked Immunosorbent Assay) RIA (Radioimmunoassay) 2 / 10 What is the primary purpose of performing a direct Coombs test in serology? To detect antibodies in the patient’s serum To detect antibodies bound to red blood cells in vivo To measure the level of complement proteins To identify blood group antigens 3 / 10 Which of the following is an example of a treponemal test used in the diagnosis of syphilis? RPR (Rapid Plasma Reagin) test TPHA (Treponema pallidum Hemagglutination Assay) VDRL (Venereal Disease Research Laboratory) test FTA-ABS (Fluorescent Treponemal Antibody Absorption) 4 / 10 Which serological marker indicates a recent Epstein-Barr Virus (EBV) infection? Anti-VCA IgG (Viral Capsid Antigen IgG) Anti-EBNA (Epstein-Barr Nuclear Antigen) Anti-VCA IgM (Viral Capsid Antigen IgM) Anti-EA (Early Antigen) 5 / 10 In HIV testing, which serological test is commonly used as a confirmatory test after an initial positive screening test? ELISA Western Blot Rapid Antibody Test PCR 6 / 10 Which of the following serological tests is used to diagnose rheumatoid arthritis by detecting rheumatoid factor? ANA (Antinuclear Antibody) test RF (Rheumatoid Factor) test Anti-CCP (Cyclic Citrullinated Peptide) test CRP (C-Reactive Protein) test 7 / 10 In serology, a fourfold rise in antibody titer between acute and convalescent samples indicates: Active infection Prior exposure without current infection No significant change in infection status Decreased immunity to the pathogen 8 / 10 Which serological method is the most sensitive for detecting low levels of specific antibodies in a patient’s serum? Agglutination test Complement fixation test Radioimmunoassay (RIA) Immunofluorescence assay 9 / 10 Which of the following markers is used to determine immunity to hepatitis B following vaccination? HBsAg (Hepatitis B surface antigen) Anti-HBc (Hepatitis B core antibody) Anti-HBs (Hepatitis B surface antibody) HBeAg (Hepatitis B e antigen) 10 / 10 Which serological test is commonly used to diagnose syphilis in the early stages of infection? VDRL (Venereal Disease Research Laboratory) test ELISA (Enzyme-Linked Immunosorbent Assay) Western Blot PCR (Polymerase Chain Reaction) Your score isThe average score is 0% 0% Restart quiz
