Answer;
BUN (Blood Urea Nitrogen) test.
A blood test that analyzes the ability of the kidneys to perform their function is the BUN test (Blood Urea Nitrogen test)
Explanation;
BUN test is a common test that reveals the important information about the performance of the kidney and also the liver. It is important in the evaluation of the kidney in several occasions; to help diagnose kidney disease, monitor people with acute or chronic dysfunction or failure.