What Does a High Creatinine Level Mean?

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What is creatinine?

As muscle tissue breaks down normally, creatinine is produced as a waste product. The kidneys process this waste and flush it out of the body in the form of urine.

Two Types of creatinine

The creatinine levels in the blood and the urine are different. Serum creatinine measures the former, while creatinine clearance measures the latter.

Creatinine "clearance rate" measures renal function. The Cleveland Clinic says the creatinine clearance test includes collecting urine for 24 hours before drawing blood.

Normal Creatinine Range

The normal range of blood creatinine is between 0.74 and 1.35 mg/dL for adult men and between 0.59 and 1.04 mg/dL for adult women, as stated by the Mayo Clinic.

If your serum creatinine levels exceed this range, there may be adverse health consequences. Here are the symptoms & causes associated with elevated levels of creatinine.


Various things, according to Healthline, might elevate creatinine levels. They include inadequate hydration and the use of excessive protein or creatine supplements.

Diuretics, antibiotics, chemotherapeutic agents, and cardiovascular medications are commonly cited as the main causes of elevated creatinine levels in the body.


Fluid retention, shortness of breath, chest pain, and confusion have all been linked to elevated creatinine levels in the source.

High creatinine levels and heart disease cause similar symptoms. People with heart problems may also have trouble speaking or paralysis, classic stroke symptoms.

If diabetes is the cause, the most typical symptoms include increased thirst and appetite, blurred eyesight, slow-healing wounds.

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