To evaluate the health of your kidneys to help diagnose kidney disease to monitor treatment for kidney disease Specimen:A blood sample drawn from a vein in your arm and or a 24-hour urine sample When To Get Tested: Routinely as part of a comprehensive or basic metabolic panel when your have signs and symptoms that may be due to kidney disease or damage or when you have a condition that may affect your kidneys and or be worsened by kidney dysfunction at intervals to monitor treatment for kidney disease or kidney function while on certain medications Test Preparation:You may be instructed to fast overnight or refrain from eating cooked meat some studies have shown that eating cooked meat prior to testing can temporarily increase the level of creatinine Normal Test Result: 0.84 milligrams per deciliter to 1.21 milligrams per deciliter (74.3 to 107 micromoles per liter), although this can vary from lab to lab, between men and women, and by age

To detect high levels of uric acid in the blood which could be a sign of the condition gout or to monitor uric acid levels when undergoing chemotherapy or radiation treatment to detect high levels of uric acid in the urine in order to diagnose the cause of kidney stones and to monitor those with gout who are at risk of developing such stones Specimen:A blood sample drawn from a vein in the arm or a 24-hour urine sample When To Get Tested: When you have joint pain or other symptoms that your healthcare practitioner suspects may be due to gout when you have had or are going to have certain chemotherapy or radiation therapies for cancer when you have recurrent kidney stones when you have gout or are otherwise at risk for kidney stone formation Test Preparation:None may be needed however some institutions recommend fasting Follow any instructions you are given Normal Test Result: 2.4 mg/dL -6.0 mg/dL (female) and 3.4 mg/dL -7.0 mg/dL (male)