CEN Practice Exam (Certified Emergency Nurse)

Answer: D - A chloride of 70 mEq/L would indicate a positive sweat test. In a sweat test, sweating is stimulated on the forearm with pilocarpine, and the amounts of sodium and chloride are measured. At least 50 mg of sweat is required to get an accurate test. A chloride level of 60 mEq/L or greater is considered a positive test.