Which laboratory result is important to communicate to the health care provider for a patient who is taking methotrexate to treat rheumatoid arthritis (RA)?
a. Rheumatoid factor is positive.
b. Fasting blood glucose is 90 mg/dL.
c. The white blood cell (WBC) count is 1500/µL.
d. The erythrocyte sedimentation rate is elevated.
Ans: c. The white blood cell (WBC) count is 1500/µL.
Bone marrow suppression is a possible side effect of methotrexate, and the patient's low WBC count places the patient at high risk for infection. The elevated erythrocyte sedimentation rate and positive rheumatoid factor are expected in RA. The blood glucose is
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