A 24-hour urine collection test is a laboratory test to measure the content of certain substances in the urine, which can be used as a diagnostic indicator of the function of the kidneys. The test ...

A potassium urine test checks the level of potassium in your body. Potassium is an important element in cell metabolism, and it’s important in maintaining the balance of fluids and electrolytes in ...

Contributed by Kim Zuber, PA-C, who oversees patients in seven dialysis centers for Metropolitan Nephrology Associates, Clinton, Md. Referrals to our nephrology office often come with a 24-hour urine ...