Serology II Serology II 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 What is the primary use of a hemagglutination inhibition (HI) test in serology? To detect antibodies against viral infections To detect bacterial antigens To measure complement levels To diagnose fungal infections 2 / 10 In serology, a positive ASO (Antistreptolysin O) titer is indicative of: Autoimmune thyroiditis Hepatitis C infection Active tuberculosis Recent streptococcal infection 3 / 10 Which serological test is used as a confirmatory test for Lyme disease? ELISA Western Blot Immunofluorescence assay Complement fixation test 4 / 10 Which of the following is the most appropriate serological marker for confirming immunity to rubella after vaccination? IgM anti-rubella antibodies IgG anti-rubella antibodies Hemagglutination inhibition test Neutralizing antibodies 5 / 10 In the context of serological testing for HIV, what is the purpose of performing an HIV-1 p24 antigen test? To confirm the presence of HIV antibodies To detect early HIV infection before antibodies are present To differentiate between HIV-1 and HIV-2 infections To assess the viral load in an HIV-positive patient 6 / 10 Which of the following serological tests is commonly used for the diagnosis of autoimmune diseases by detecting autoantibodies? Anti-DNA antibodies test Anti-HBc (Hepatitis B core antibody) test CRP (C-Reactive Protein) test Monospot test 7 / 10 What is the primary difference between an IgM and an IgG response in serology? IgM is produced later in an infection, while IgG is produced earlier. IgM indicates a recent or acute infection, while IgG indicates a past or chronic infection. IgM is more specific, while IgG is more sensitive. IgM is found in mucosal secretions, while IgG is found in serum. 8 / 10 The direct Coombs test (direct antiglobulin test) is used to: Detect free antibodies in the serum Detect antibodies bound to red blood cells in vivo Quantify the level of immunoglobulins in serum Determine the presence of rheumatoid factor 9 / 10 Which serological test is used to detect antibodies against the Epstein-Barr virus (EBV) in infectious mononucleosis? Monospot test PCR (Polymerase Chain Reaction) Western Blot ANA (Antinuclear Antibody) test 10 / 10 Which of the following is a non-treponemal serological test used for the screening of syphilis? FTA-ABS (Fluorescent Treponemal Antibody Absorption) TPHA (Treponema Pallidum Hemagglutination Assay) RPR (Rapid Plasma Reagin) ELISA (Enzyme-Linked Immunosorbent Assay) Your score isThe average score is 0% 0% Restart quiz
