Also Known As:
Clearance, Creatinine
Specimen:
Blood and Urine
Preparation:
You must take your lab order to the lab to obtain a proper specimen container before collection. No fasting required. Drink plenty of water before the clearance is begun, and continue good hydration throughout the clearance. Avoid cephalosporins. If possible, medications should be stopped beforehand. Check with physician before stopping any medications. Urinate at 8am and discard the specimen. Then collect all urine in 24-hour period, ending with final collection at 8am the next morning. Refrigerate the collected urine between all voidings or keep it in a cool place. Screw the lid on securely. Transport the specimen promptly to the laboratory. Container must be labeled with full name, date and time collection started, and date and time collection finished.
Test Results:
3-5 days. May take longer based on weather, holiday or lab delays.
