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Lesson 1 Identifying Rheumatoid Arthritis: Identifying Rheumatoid Arthritis (Advanced)
1. If there is agglutination present in wells 1–4 of the 6 wells after performing the serial dilution, what is the semi-quantitative result?
A. 8 IU/mL
B. 10 IU/mL
C. 40 IU/mL
D. 80 IU/mL
2. RA affects more men than women.
A. true
B. false
3. Approximately, how many patients with RA actually test positive for Rf?
A. 100%
B. 70–90%
C. 50–65%
D. 20–40%
4. Which of the following is
not
a common symptom of RA?
A. fatigue
B. malaise
C. transient joint pain
D. loss of vision
5. Which of the following is the
best
laboratory test to order in addition to the Rf test to help provide a more accurate diagnosis of RA?
A. CBC
B. Anti-CCP
C. ANA
D. ESR
6. If there is
no
agglutination in the qualitative Rf test, how is the titer result reported?
A. <10 IU/mL
B. <10 mg/dL
C. <5 IU/mL
D. <5 mg/dL
7. A negative Rf result does
not
necessarily rule out RA.
A. true
B. false
8. A dilution of 1/32 in the semi-quantitative Rf procedure is equivalent to which of the following?
A. 40 IU/mL
B. 80 IU/mL
C. 160 IU/mL
D. 320 IU/mL
9. Approximately, what percentage of healthy people have a positive Rf test?
A. 1%
B. 5%
C. 7%
D. 9%
10. Rf can be found in patients with other connective tissue diseases, such as SLE.
A. true
B. false
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