Creatinine

Clinical Chemistry

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Description

Measured as part of the urea and electrolytes (U&E) profile and is used to calculate estimated GFR (eGFR). Creatinine is a waste product formed by the spontaneous dehydration of body creatine. Most of the body creatine is found in muscle tissue where it serves as a high energy storage reservoir. The rate of creatinine formation is constant with 1 to 2 percent of the body creatine being converted to creatinine every 24 hours. Serum creatinine and urea levels are elevated in patients with renal disease.

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Indications

Assessment of renal function.

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Sample Type

Serum, SST/Gel, minimum 2 mL (1 mL separated serum).

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Reference Range

Reference ranges are provided on the report. Alternatively, please contact the laboratory for current ranges.

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Turnaround Time

Within 1 day

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Testing Frequency

As required

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