A client taking furosemide (Lasix) comes into the clinic for routine bloodwork. Which of the following findings indicates an adverse effect of Lasix?

  • chloride 102 mg/dL
  • ammonia 36 µmol/L
  • uric acid 13.5 mg/dL
  • ferritin 176 ng/mL
Number 3 is correct.
An elevated uric acid level (hyperuricemia) is an adverse effect of furosemide (Lasix). A uric acid level of 13.5 mg/dL is high above normal range (0.18 – 0.48 mmol/L). Hypokalemia is also an adverse effect of Lasix.