Question

multiple choice question
what percentage of patients with rheumatoid arthritis are rf positive?
please select your answer...
a 50%
b 60%
c 70%
d 80%

Explanation:

In general, approximately 70 - 80% of patients with rheumatoid arthritis are rheumatoid factor (RF) positive. Among the given options, 70% is a commonly - cited approximate value within this range.

Answer:

C. 70%