Creatinine Blood Tests

Creatinine is a test that measures the level of a waste product called creatinine in your blood. Creatinine is produced by your muscles and is normally filtered out of your body by your kidneys. This test helps to evaluate how well your kidneys are functioning.

When your kidneys are healthy, they efficiently remove creatinine from your blood. However, if your kidneys are not working properly, the level of creatinine in your blood can increase. High levels of creatinine may indicate kidney damage or disease.

This test is often ordered if you have symptoms of kidney problems, such as frequent urination, swelling in your legs or feet, or changes in urine color. It is also used to monitor the progression of kidney disease and to adjust medication dosages for certain conditions.

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