Creatinine - urine

Alternative names:

urine creatinine - spot collection

Normal values:

urine creatine (24-hour sample) 0.0 to .25 gm/24-hours
spot collection 25 to 400 mg/dl

Note: gm/24-hours = grams per 24-hours; mg/dl = milligrams per deciliter

What abnormal results mean:

• acromegaly (rare)
• acute tubular necrosis (rare)
• dehydration
• diabetic nephropathy
• gigantism (rare)
• glomerulonephritis
• muscular dystrophy
• pyelonephritis
• reduced renal blood flow (e.g., shock, congestive heart failure)
• renal failure
• rhabdomyolysis
• urinary tract obstruction
• muscular dystrophy (late stage)
• myasthenia gravis
• high meat diet

Additional conditions under which the test may be performed:

• complicated UTI (pyelonephritis)
• Cushing's syndrome caused by adrenal tumor
• pituitary Cushing's (Cushing's disease)
• prerenal azotemia