Kidney failure can be evaluated with which tests?

Kidney failure can be evaluated with which tests?

• A. Glucose and HbA1c
• B. Troponin
• C. BNP
• D. Creatinine and Blood Urea Nitrogen, (BUN)

Answer: (D)

Assessing kidney function relies on measurements that reflect how well the kidneys filter waste from the blood. Creatinine and BUN are classic markers for this purpose. Creatinine is a waste product of muscle metabolism that is normally filtered by the kidneys; when the glomerular filtration rate drops, creatinine rises, making it a sensitive indicator of reduced kidney function. BUN measures nitrogen from urea, a waste product of protein metabolism; its level also increases with impaired filtration but can be influenced by hydration status and protein intake. Together, elevated creatinine and BUN point to impaired renal function and possible kidney failure, and the ratio can help differentiate prerenal from intrinsic renal causes. The other options relate to diabetes management (glucose and HbA1c) or cardiac injury/heart failure (troponin and BNP) and do not directly assess kidney function.

Assessing kidney function relies on measurements that reflect how well the kidneys filter waste from the blood. Creatinine and BUN are classic markers for this purpose. Creatinine is a waste product of muscle metabolism that is normally filtered by the kidneys; when the glomerular filtration rate drops, creatinine rises, making it a sensitive indicator of reduced kidney function. BUN measures nitrogen from urea, a waste product of protein metabolism; its level also increases with impaired filtration but can be influenced by hydration status and protein intake. Together, elevated creatinine and BUN point to impaired renal function and possible kidney failure, and the ratio can help differentiate prerenal from intrinsic renal causes. The other options relate to diabetes management (glucose and HbA1c) or cardiac injury/heart failure (troponin and BNP) and do not directly assess kidney function.