NR574 FINAL EXAM Week 3:Immunological Disorders UPDATED ACTUAL
Questions and CORRECT Answers
1. A 28-year-old woman is seen in a Recent inoculation with the influenza vaccine is a known
sexually transmitted disease clinic cause of a false-positive result (Correct answer)
and is diagnosed with Chlamydia
trachomatis. An HIV antibody test Rationale: The IgM/IgG-sensitive assays detect HIV
is ordered. Which one of the fol- sooner after infection than the IgG-sensitive assays. The
lowing statements is TRUE regard- laboratory-based IgG-sensitive assays detect HIV later
ing laboratory-based HIV antibody after initial HIV acquisition than the IgM/IgG-sensitive
tests that are approved for use by assays. The most notable causes of a false-positive HIV
the United States Food and Drug antibody test are pregnancy, recent inoculation with in-
Administration? fluenza vaccine, autoimmune disorders, immunization
with an investigational HIV-1 vaccine, hypergammaglob-
a. The IgG-sensitive antibody tests ulinemia, receipt of gamma globulin, prior blood trans-
detect HIV sooner after infection low-up HIV testing related to this
than the IgM/IgG-sensitive anti-
body tests
b. Recent inoculation with the in-
fluenza vaccine is a known cause
of a false-positive result
c. The most common cause of a
false-negative test is coinfection
with hepatitis C virus
d. The IgM/IgG-sensitive antibody
tests detect HIV sooner after infec-
tion than HIV p24 antigen tests
e. None of the IgM/IgG-sensitive
antibody tests can detect HIV-2
2. A 31-year-old woman has expo-
sure to HIV after a condom broke
while having vaginal sex with her
partner who has HIV. She has fol-
, fusions, HTLV-1/2 infection, and collagen vascular dis-
eases. With HIV antibody tests, the most common cause
of a false-negative test is acute HIV infection.
The CDC recommends using 45 days as the window pe-
riod for all laboratory-based IgM/IgG HIV-1/2 antibody
immunoassays (Correct answer)
Rationale: The HIV window period is typically defined as
2/
10
Questions and CORRECT Answers
1. A 28-year-old woman is seen in a Recent inoculation with the influenza vaccine is a known
sexually transmitted disease clinic cause of a false-positive result (Correct answer)
and is diagnosed with Chlamydia
trachomatis. An HIV antibody test Rationale: The IgM/IgG-sensitive assays detect HIV
is ordered. Which one of the fol- sooner after infection than the IgG-sensitive assays. The
lowing statements is TRUE regard- laboratory-based IgG-sensitive assays detect HIV later
ing laboratory-based HIV antibody after initial HIV acquisition than the IgM/IgG-sensitive
tests that are approved for use by assays. The most notable causes of a false-positive HIV
the United States Food and Drug antibody test are pregnancy, recent inoculation with in-
Administration? fluenza vaccine, autoimmune disorders, immunization
with an investigational HIV-1 vaccine, hypergammaglob-
a. The IgG-sensitive antibody tests ulinemia, receipt of gamma globulin, prior blood trans-
detect HIV sooner after infection low-up HIV testing related to this
than the IgM/IgG-sensitive anti-
body tests
b. Recent inoculation with the in-
fluenza vaccine is a known cause
of a false-positive result
c. The most common cause of a
false-negative test is coinfection
with hepatitis C virus
d. The IgM/IgG-sensitive antibody
tests detect HIV sooner after infec-
tion than HIV p24 antigen tests
e. None of the IgM/IgG-sensitive
antibody tests can detect HIV-2
2. A 31-year-old woman has expo-
sure to HIV after a condom broke
while having vaginal sex with her
partner who has HIV. She has fol-
, fusions, HTLV-1/2 infection, and collagen vascular dis-
eases. With HIV antibody tests, the most common cause
of a false-negative test is acute HIV infection.
The CDC recommends using 45 days as the window pe-
riod for all laboratory-based IgM/IgG HIV-1/2 antibody
immunoassays (Correct answer)
Rationale: The HIV window period is typically defined as
2/
10
