Your doctor will ask about your symptoms and medical history. A physical exam will be done. You will also have a few tests, including:
Creatinine and BUN are waste products that the kidneys usually remove from the blood. When the kidneys are damaged, the creatinine and BUN levels rise in the blood. A simple blood test can measure these levels.
During the filtering process, the kidneys usually return protein to the circulation. With chronic kidney disease, the kidneys allow protein to leak into the urine. Different kinds of proteins can leak into the urine. Albumin is a protein that often appears in the urine of people who have chronic kidney disease caused by high blood pressure or diabetes.
Different tests can be used to check for protein in the urine.
The glomerular filtration rate (GFR) is a measurement of how well the kidneys are processing wastes. Your doctor can calculate the GFR based on your:
The GFR determines the stage of chronic renal disease.
|Stage||Glomerular Filtration Rate (GFR)|
|1||Over 90 mL/min (normal)|
|2||60 to 89 mL/min (mild decrease)|
|3||30 to 59 mL/min (moderate decrease)|
|4||15 to 29 mL/min (severe decrease)|
|5||under 15 mL/min (kidney failure or end-stage renal disease)|
Your doctor may order an ultrasound or a CT scan to evaluate your kidneys, ureters, and bladder. These tests can tell your doctor if a kidney stone, tumor, or other structural problem may have caused the chronic kidney disease.
Your doctor may recommend a kidney biopsy, unless you have small kidneys or have end-stage renal disease. During a kidney biopsy, a small piece of kidney tissue is removed and examined under a microscope. The biopsy can tell how much kidney damage has already occurred. It also may determine the cause of your kidney disease.
Your doctor may order the following tests to determine if there is an underlying disease causing your chronic kidney disease:
Are you at increased risk for chronic kidney disease? National Kidney Foundation website. Available at: http://www.kidney.org/atoz/pdf/11-10-1814.pdf. Published 2010. Accessed July 2, 2013.
Chronic kidney disease. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated April 22, 2013. Accessed July 2, 2013.
Chronic kidney disease: patient information handout. American Academy of Family Physicians website. Available at: http://familydoctor.org/online/famdocen/home/common/kidney/832.html. Updated November 2010. Accessed July 2, 2013.
Kidney disease basics. National Kidney Disease Education Program website. Available at: http://www.nkdep.nih.gov/patients/kidney_disease_information.htm. March 1, 2012. Accessed July 2, 2013.
Johnson CA, Levey AS, et al. Clinical practice guidelines for chronic kidney disease in adults: Part II. glomerular filtration rate, proteinuria, and other markers. Am Fam Phys. 2004; 70:1091-1097.
Snively CS, Gutierrez C. Chronic kidney disease: prevention and treatment of common complications. Am Fam Phys. 2004;70:1921-1930.
Last reviewed May 2015 by Michael Woods, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.