Serology II FiniteQuest

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)

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