by Carmack A

The doctor will ask about your symptoms and health past. A physical exam will be done.

Tests may include:

  • Blood tests—to look for:
    • Glomerular filtration rate (GFR)—Measures how well the kidneys are filtering wastes. GFR drops as the kidneys fail.
    • Increase in wastes in the blood. Items measured may include creatine and urea. The amount of wastes in the blood goes higher as the kidneys fail.
    • Changes of substances in the blood that are normally controlled by the kidneys. This may include calcium, phosphorus, parathyroid hormone, blood electrolytes, and potassium.
  • Urine tests—to look for:
    • Excess protein in the urine. Damaged kidneys let more protein pass into urine than healthy kidneys.
    • Amount of urine that is made. Little or no urine is made as the kidneys fail.

Imaging tests look for a cause of sudden changes in how the kidneys work. They can also look at the size and shape of the kidneys. Tests may be done with:


Chronic kidney disease (CKD) in adults. EBSCO DynaMed website. Available at: . Updated January 18, 2019. Accessed July 19, 2019.

Estimated glomerular filtration rate (eGFR). National Kidney Foundation website. Available at: Accessed July 19, 2019.

Murphree DD, Thelen SM. Chronic kidney disease in primary care. J Am Board Fam Med. 2010;23(4):542-550.

O'Connor NR, Corcoran AM. End-stage renal disease: symptom management and advance care planning. Am Fam Physician. 2012;85(7):705-710.

What is kidney failure? National Kidney Foundation website. Available at: Accessed July 19, 2019.

Revision Information

  • Reviewer: EBSCO Medical Review Board Adrienne Carmack, MD
  • Review Date: 07/2019
  • Update Date: 10/04/2019