Waste Products in the Blood

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Waste products are usually excreted by the kidneys. High levels of waste products in the blood may mean that the kidneys are not working as they should.

Blood Urea Nitrogen (BUN):

High levels of BUN can also be found in those on high-protein diets and/or with strenuous exercise.

Goal values:
  • Male: 10 – 25 mg/dL
  • Female: 8 – 25 mg/dL

Serum Creatinine (CR): An indicator of kidney function

Goal value:
  • 0.7 – 1.4 mg/dL

Uric Acid:

High levels of uric acid are also found in those with gout, arthritis and some metabolic disorders.

Goal values:
  • Male: 3 – 8 mg/dL
  • Female: 2 – 7 mg/dL

Urine Albumin Creatinine Ratio (U Alb:Cr):

Measures whether there is any protein in the urine. A small amount of protein in the urine is a risk factor for heart and blood vessel disease.

Goal values:
  • Less than 30 mg/g

Reviewed: 09/11

This information is about testing and procedures and may include instructions specific to Cleveland Clinic. Please consult your physician for information pertaining to your testing.

Talk to a Nurse: Mon. - Fri., 8:30 a.m. - 4 p.m. (ET)

Call a Heart & Vascular Nurse locally 216.445.9288 or toll-free 866.289.6911.

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This information is provided by Cleveland Clinic and is not intended to replace the medical advice of your doctor or health care provider. Please consult your health care provider for advice about a specific medical condition.

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