Creatinine urine test

After you provide a urine sample, it is tested in the lab. If needed, your health care provider may ask you to collect your urine at home over 24 hours . Your provider will tell you how to do this. Follow instructions exactly so that the results are accurate.

Your provider may tell you to temporarily stop taking certain medicines that may affect test results. Be sure to tell your provider about all the medicines you take. These include: Antibiotics such as cefoxitin or trimethoprim Cimetidine, famotidine, and ranitidine Do not stop taking any medicine before talking to…

The test involves only normal urination. There is no discomfort.

Creatinine is a chemical waste product of creatine. Creatine is a chemical the body makes to supply energy, mainly to muscles. This test is done to see how well your kidneys work. Creatinine is removed by the body entirely by the kidneys. If kidney function is not normal, the creatinine level in your urine decreases.…

Urine creatinine (24-hour urine collection) values can range from 500 to 2000 mg/day (4,420 to 17,680 mmol/day). Results depend on your age and amount of lean body mass. Another way of expressing the normal range for test results is: 14 to 26 mg per kg of body mass per day for men (123.8 to 229.8 µmol/kg/day) 11 to 20…

Abnormal results of urine creatinine may be due to any of the following: High meat diet Kidney problems, such as damage to the tubule cells Kidney failure Too little blood flow to the kidneys, causing damage to filtering units Kidney infection (pyelonephritis) Muscle breakdown (rhabdomyolysis), or loss of muscle…

There are no risks with this test.

Landry DW, Gharavi AG. Approach to the patient with renal disease. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine . 27th ed. Philadelphia, PA: Elsevier; 2024:chap 100. Oh MS, Briefel G, Pincus MR. Evaluation of renal function, water, electrolytes, and acid-base balance. In: McPherson RA, Pincus MR, eds. Henry's…