Creatinine accumulates in your body because of muscular metabolic processes. Through blood circulation, creatinine goes to the kidneys, which perform filtration to create urine with creatinine waste. Monitoring creatinine levels enables assessment of kidney function because the kidneys take the lead in creatinine waste removal. This blog delivers complete knowledge about creatinine by providing essential information regarding its importance while explaining abnormal level causes and symptoms ... Creatinine (/ kriˈætɪnɪn, - ˌniːn /; from Ancient Greek κρέας (kréas) 'flesh') is a breakdown product of creatine phosphate from muscle and protein metabolism. It is released at a constant rate by the body (depending on muscle mass). [3][4] Creatinine is a waste product from muscle breakdown and protein digestion that is normally removed by the kidneys. The creatinine blood test measures the level of creatinine in the blood and can indicate kidney function or disease. Creatinine is produced during muscle use, and is cleared out of your body by your kidneys. Elevated creatinine levels may indicate kidney dysfunction.