A 40-year-old female tennis player with tendonitis is taking large doses of an over-the-counter nonsteroidal anti-inflammatory agent.After taking the medication for several weeks,she develops a skin rash and observes a decrease in urine volume.Results of her urinalysis are:

-What additional test might be requested on this specimen?

Question

A 40-year-old female tennis player with tendonitis is taking large doses of an over-the-counter nonsteroidal anti-inflammatory agent.After taking the medication for several weeks,she develops a skin rash and observes a decrease in urine volume.Results of her urinalysis are:
 
-What additional test might be requested on this specimen?

Quizplus · Accepted Answer

The patient's symptoms and urinalysis results suggest that she may be experiencing interstitial nephritis, which can be caused by nonsteroidal anti-inflammatory drugs (NSAIDs). A urine eosinophil stain can help confirm the diagnosis by detecting an increase in eosinophils, which are often present in interstitial nephritis. Creatinine clearance may also be ordered to assess kidney function, but it would not specifically help diagnose interstitial nephritis. Prussian blue stain and fungal culture are not relevant tests in this scenario.

A 40-Year-Old Female Tennis Player with Tendonitis Is Taking Large