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A 20-year-old female asked:

Is there a differences between serum creatinine and ck-mb? i know they're both creatinine.

1 doctor answer1 doctor weighed in
Dr. Kevin Carr
Internal Medicine 21 years experience
Creatine/creatinine: CK-MB (creatine kinase) is an enzyme that builds. Creatinine is a breakdown product of CREATINE. CK-MB adds phosphorus group to CREATINE (made by liver to provide energy) to make CREATINE PHOSPHATE (energy reserve molecule) which gets broken down at a constant rate to form CREATININE--a marker for kidney function. Meanwhile, CK-MB is marker for cardiac damage.

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Last updated Apr 30, 2016
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