Which laboratory data should the nurse monitor for the client with inflammatory bowel disease who is prescribed sulfasalazine (Azulfidine), a sulfonamide antibiotic? 1. The client’s liver function...

Which laboratory data should the nurse monitor for the client with inflammatory bowel disease who is prescribed sulfasalazine (Azulfidine), a sulfonamide antibiotic?

1. The client’s liver function tests.

2. The client’s serum potassium level.

3. The client’s serum creatinine level.

4. The client’s International Normalized Ratio (INR).