RENAL (KIDNEY RELATED) LAB VALUES

BUN (Blood Urea Nitrogen)
Creatinine
Uric Acid

BUN (Blood Urea Nitrogen) - Increases can be caused by excessive protein intake, kidney damage, certain drugs, low fluid intake, intestinal bleeding, exercise or heart failure. Decreased levels may be due to a poor diet, malabsorption, liver damage or low nitrogen intake.

Normal Adult Range: 7 - 18 mg/dl

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CREATININE - Low levels are sometimes seen in kidney damage, protein starvation, liver disease or pregnancy. Elevated levels are sometimes seen in kidney disease due to the kidneys job of excreting creatinine, muscle degeneration, and some drugs involved in impairment of kidney function.

Creatinine, serum 0.6 - 1.2 mg/dl
Creatinine, Urine (male) - 0.8 - 2.4 g/24 h
Creatinine, Urine (female) - 0.6 - 1.8 g/24 h
Creatinine clearance (male) - 97 - 137 mL/min
Creatinine clearance (female) - 88 - 128 mL/min

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URIC ACID - High levels are noted in gout, infections, kidney disease, alcoholism, high protein diets, and with toxemia in pregnancy. Low levels may be indicative of kidney disease, malabsorption, poor diet, liver damage or an overly acid kidney.

Uric Acid, serum 3.0 - 8.2 mg/dL
Uric Acid, urine - varies with diet

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