Kidney Problems On Blood Test. Blood tests for kidney problems. Urea nitrogen is normal in the blood at small levels but higher levels may indicate that the individual is experiencing kidney problems.
This type of kidney blood test can therefore be a more sensitive indicator of kidney problems than a bun test. In women levels higher than 1 2 and in men levels higher than 1 4 are alarming. 24 hour urine or timed urine sample this test requires that urine is collected for an entire 24 hour period there are other variations of this test that require urine to be collected for 4 hours 12 hours or another length of.
Blood urea nitrogen bun urea nitrogen is also a waste component produced by the breakdown of protein in your foods.
Blood urea nitrogen test. Therefore if you have an abnormal result you may need further tests to find the cause of a kidney problem. What your kidneys do. The blood urea nitrogen bun test checks for other waste products in the blood such as urea nitrogen.