U&E
Note: this site is for informational purposes only. To view test results or book a test, use the NHS app in England or contact your GP.
The U&E (urea and electrolytes) test is a blood test in which a sample is taken from a vein to measure urea and key electrolytes such as sodium and potassium. It is used to assess kidney function and fluid-electrolyte balance, helping detect dehydration, kidney disease and other metabolic disturbances.
U&E and EUC are commonly used abbreviations of urea and electrolytes and are requested when assessing kidney (renal) function and electrolyte balance. Urea may or may not be included in the routine profile used by your local laboratory. Creatinine is frequently included and so the request may be just U&E or some combination of the letters E/U/C. For more information on the tests included please follow the blue links above which will take you to the relevant parts of our website.