Creatinine is a chemical waste product in the blood that passes through the kidneys to be filtered and eliminated in urine. It is a normal waste product produced by muscle metabolism. When your kidneys are functioning normally, they filter creatinine and other waste products out of your blood and send them out of the body through urine.
Blood urea nitrogen-to-creatinine ratio (BUN:creatinine). The BUN test measures the amount of urea in your blood. Urea is a waste product made when protein is broken down in your body. Urea is made in the liver and passed out of your body in the urine. A creatinine clearance test measures how well creatinine is removed from your blood by your kidneys. This test gives better information than a blood creatinine test on how well your kidneys are working. The test is done on both a blood sample and on a sample of urine collected over 24 hours. Creatinine is a normal waste product produced by muscle metabolism. When your kidneys are functioning normally, they filter creatinine and other waste products out of your blood and send them out of the body through urine. A creatinine urine test measures the amount of creatinine in your urine and can help your doctor evaluate how well your kidneys filter waste. This is useful in diagnosing or ruling out kidney diseases and some other conditions Creatinine is a chemical waste product in the blood that passes through the kidneys to be filtered and eliminated in urine. The chemical waste is a by-product of normal muscle contractions. Creatinine is made from creatine, a supplier of energy to the muscle.  In this article. Creatinine is a waste product from the normal breakdown of muscle tissue. As creatinine is produced, it's filtered through the kidneys and excreted in urine. Doctors measure the blood creatinine level as a test of kidney function. The kidneys ' ability to handle creatinine is called the creatinine clearance rate, which helps to estimate the glomerular filtration rate (GFR) -- the rate of blood flow through the kidneys. Creatinine is a waste product that is produced continuously during normal muscle breakdown. The kidneys filter creatinine from the blood into the urine, and reabsorb almost none of it. The amount of blood the kidneys can make creatinine-free each minute is called the creatinine clearance. Doctors measure the blood creatinine level as a test of kidney function. The kidneys ' ability to handle creatinine is called the creatinine clearance rate, which helps to estimate the glomerular filtration rate (GFR) -- the rate of blood flow through the kidneys. Classification. Creatinine is a metabolic by-product of muscle metabolism, and normally appears in urine in relatively constant quantities over a 24 hour period with normal liquid intake. Therefore, urine creatinine can be used as an indicator of urine water content or as a marker identifying a specimen as urine. Creatinine. Creatinine is a metabolic by-product of muscle metabolism, and normally appears in urine in relatively constant quantities over a 24 hour period with normal liquid intake. Creatine is broken down into creatinine. Your kidneys take creatinine out of your blood and pass it out of your body in urine. If your kidneys are damaged and can't work as they should, the amount of creatinine in your urine goes down while its level in your blood goes up. Three types of tests can be done. A creatinine clearance test measures how well creatinine is removed from your blood by your kidneys. This test gives better information than a blood creatinine test on how well your kidneys are working. The test is done on both a blood sample and on a sample of urine collected over 24 hours. This test measures the level of a substance called creatinine in your urine. Creatinine is a waste product that your body makes when you use your muscles. It's also made when your body digests meat. Healthy kidneys remove creatinine from your blood, and it leaves your body in your urine. Creatinine is a chemical waste molecule that is generated from muscle metabolism. Creatinine is produced from creatine, a molecule of major importance for energy production in muscles. Approximately 2% of the body's creatine is converted to creatinine every day. Creatinine is transported through the bloodstream to the kidneys.
http://www.webmd.com/a-to-z-guides/creatinine-and-creatinine-clearance http://www.healthline.com/health/creatinine-clearance http://www.davita.com/kidney-disease/overview/symptoms-and-diagnosis/what-is-creatinine?/e/4726 http://www.webmd.com/a-to-z-guides/creatinine-and-creatinine-clearance-blood-tests http://www.webmd.com/a-to-z-guides/creatinine-and-creatinine-clearance-blood-tests https://www.redwoodtoxicology.com/resources/drug_info/creatinine http://www.webmd.com/a-to-z-guides/creatinine-and-creatinine-clearance http://www.urmc.rochester.edu/encyclopedia/content.aspx?ContentTypeID=167&ContentID=creatinine_urine http://www.medicinenet.com/creatinine_blood_test/article.htm
what is creatinine urine