What does a blood test for U and E determine?

A blood test for U and E, which stands for urea and electrolytes, is used to assess kidney function and electrolyte balance in the body. It measures levels of urea, a waste product formed from protein metabolism, and various electrolytes such as sodium, potassium, and chloride. Abnormal levels can indicate kidney issues, dehydration, or imbalances that may affect overall health. This test is commonly used in routine health checks, as well as in diagnosing and monitoring various medical conditions.