cre·​at·​i·​nine | \ krē-ˈa-tə-ˌnēn How to pronounce creatinine (audio) , -ən \

Definition of creatinine

: a white crystalline strongly basic compound C4H7N3O formed from creatine and found especially in muscle, blood, and urine

Examples of creatinine in a Sentence

Recent Examples on the Web Both his serum creatinine and urea levels were significantly elevated. Bruce Y. Lee, Forbes, 10 July 2022 However, last week, my creatinine level was elevated. Dr. Keith Roach, oregonlive, 7 June 2022 The overall pattern of your creatinine over time needs to be considered. Dr. Keith Roach, oregonlive, 25 May 2022 The organization recommends two main tests: the glomerular filtration rate and urine albumin-to-creatinine ratio tests. Kendall Ross, ABC News, 22 Mar. 2022 My creatinine readings have largely been stable since starting the product. Dr. Keith Roach, oregonlive, 17 Jan. 2022 Cellular damage post-marathon is best measured by the presence and production of creatinine kinase (CK)—a marker that indicates damage to skeletal and myocardial tissue — and increased myoglobin levels in the blood stream. Jeff Gaudette, Outside Online, 22 Nov. 2019 This test looks for creatinine, a waste product that can build up in your blood when your kidneys are damaged, Your doctor puts your result into a math formula to calculate your glomerular filtration rate (GFR). Hallie Levine,, 3 Jan. 2022 The organ successfully evaded rejection and even functioned normally, creating urine and proper waste products such as creatinine. William A. Haseltine, Forbes, 1 Nov. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'creatinine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of creatinine

1851, in the meaning defined above

History and Etymology for creatinine

German Kreatinin, from Kreatin creatine

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Time Traveler for creatinine

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The first known use of creatinine was in 1851

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Dictionary Entries Near creatinine

creatine phosphate



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Statistics for creatinine

Last Updated

2 Aug 2022

Cite this Entry

“Creatinine.” Dictionary, Merriam-Webster, Accessed 13 Aug. 2022.

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More Definitions for creatinine


cre·​at·​i·​nine | \ krē-ˈat-ᵊn-ˌēn, -ᵊn-ən How to pronounce creatinine (audio) \

Medical Definition of creatinine

: a white crystalline strongly basic compound C4H7N3O formed from creatine and found especially in muscle, blood, and urine

More from Merriam-Webster on creatinine Encyclopedia article about creatinine


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