The typical GFR value is 90 or above. A GFR value of less than 90 can be a sign of kidney problems. The blood urea nitrogen (BUN) test checks for urea nitrogen, a waste product, in the blood.

your doctor may also order a blood test to measure BUN levels if they suspect you have kidney disease. Doctors take the creatinine, GFR and BUN results together to give them an idea of how the ...

Kidney damage is defined as pathologic abnormalities or markers of damage, including abnormalities in blood or urine tests or imaging studies. Abbreviations: GFR, glomerular filtration rate ...

There’s a blood test that checks how well your kidneys filter. Your doctor may call this a “GFR” test (short for glomerular filtration rate). Generally speaking, a score of more than 90 is ...