![]() Less commonly, 24-hour urine creatinine test may be used to calculate creatinine clearance. This test can be performed on a "spot" urine sample or a 24-hour urine collection, depending on which test is being requested by your clinician. Urine creatinine test is a measure of the amount of creatinine in urine. For this reason, creatinine concentrations will be slightly higher in men than in women and children. The quantity produced depends on the sex, size or age of the person and their muscle mass. Almost all creatinine is excreted by the kidneys, so blood levels are a good measure of how well your kidneys are working. Both creatine and creatinine are produced by the body at a relatively constant rate. Creatine is part of the cycle that produces energy needed to contract your muscles. Creatinine is a waste product produced in your muscles from the breakdown of a compound called creatine. This test measures the amount of creatinine in your blood and/or urine. ![]() We are not a laboratory and are unable to comment on an individual's health and treatment. Lab Tests Online-UK is an educational website designed to provide patients and carers with information on laboratory tests used in medical care. If you are concerned about your test results, you will need to arrange an appointment with your doctor so that all relevant information including age, ethnicity, health history, signs and symptoms, laboratory and other procedures (radiology, endoscopy, etc.), can be considered. If the doctor wants to see you about the result(s), you will be offered an appointment. Your GP practice will be able to provide specific details. If you are registered to use the online services of your local practice, you may be able to access your results online. The X-ray & scan results may take longer. Some specialist test results may take longer, if samples have to be sent to a reference (specialist) laboratory. On average it takes 7 working days for the blood test results to come back from the hospital, depending on the exact tests requested. Urine Protein and Urine Protein to Creatinine Ratio.Urine Albumin to Creatinine Ratio or ACR.Unvalidated or misleading laboratory tests.Heparin-induced Thrombocytopenia Antibody. ![]() Genetic Tests for Targeted Cancer Therapy.First Trimester (Combined) Screen for Down’s Syndrome and other fetal anomalies.Factor V Leiden Mutation and PT 20210 Mutation. ![]()
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