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Your kidneys work around the clock to filter waste products from your blood, maintain fluid and electrolyte balance, and perform several other essential functions.
One waste product commonly measured during a blood test is creatinine.
Creatinine is produced naturally through normal muscle activity and is removed from the bloodstream primarily by the kidneys. When kidney filtration decreases, creatinine may accumulate in the blood.
However, high creatinine does not automatically mean you have kidney disease. Creatinine can also be influenced by muscle
