BUN and creatinine are used to assess which bodily function?

BUN and creatinine are used to assess which bodily function?

• A. Liver function test
• B. Kidney function test
• C. Pancreatic function test
• D. Cardiac function test

Answer: (B)

BUN and creatinine measure kidney function by showing how well the kidneys remove waste from the blood. Urea nitrogen (BUN) comes from protein breakdown in the liver and is cleared by the kidneys; creatinine is a muscle metabolism byproduct that is filtered out as part of normal glomerular filtration. If the kidneys aren’t filtering effectively, both wastes accumulate and their blood levels rise. Creatinine is a particularly useful marker because its level closely tracks glomerular filtration rate and is less influenced by diet than BUN. Clinically, veterinarians interpret both together (often with the BUN/creatinine ratio) to differentiate types of kidney issues and to assess overall renal function. These markers aren’t used to assess liver, pancreatic, or cardiac function—tests for those organs look at different substances (like liver enzymes and bilirubin for the liver, amylase/lipase for the pancreas, or troponin for the heart).

BUN and creatinine measure kidney function by showing how well the kidneys remove waste from the blood. Urea nitrogen (BUN) comes from protein breakdown in the liver and is cleared by the kidneys; creatinine is a muscle metabolism byproduct that is filtered out as part of normal glomerular filtration. If the kidneys aren’t filtering effectively, both wastes accumulate and their blood levels rise. Creatinine is a particularly useful marker because its level closely tracks glomerular filtration rate and is less influenced by diet than BUN. Clinically, veterinarians interpret both together (often with the BUN/creatinine ratio) to differentiate types of kidney issues and to assess overall renal function.

These markers aren’t used to assess liver, pancreatic, or cardiac function—tests for those organs look at different substances (like liver enzymes and bilirubin for the liver, amylase/lipase for the pancreas, or troponin for the heart).