Question
A 45-year-old female complained of increasing multiple joints pain over the last 2 months. She describes puffy hands and feet and a painful neck. Rheumatoid factor is positive. Which of the following investigations would be useful in this case?
| A. | Anti-cyclic citrullinated peptide antibody |
| B. |
Ultrasound scan hands and feet |
| C. |
Anti-JO-I antibody |
| D. |
Anti-mitochondrial antibody |
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