Definition of "creatinine" [creatinine]

• A creatine anhydride, C4H7N3O, formed by the metabolism of creatine, that is found in muscle tissue and blood and normally excreted in the urine as a metabolic waste. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Now some other things that are very, very encouraging and show very good, when he initially came in the hospital for his kidney function test, he had what we call a creatinine, which is a function of the kidneys."
• "You can learn as much – or more – from one glance at a private space as you can from hours of exposure to a public face. hamilton beach health smart juicer urinary protein creatinine ratio"
• "The "kidney number" is a measure of kidney function and is based on the amount of a substance called creatinine in the blood."