In monitoring kidney function during chemotherapy, which parameter is most directly assessed?

In monitoring kidney function during chemotherapy, which parameter is most directly assessed?

• A. Creatinine
• B. ALT
• C. Amylase
• D. Albumin

Answer: (A)

Creatinine is the best measure of kidney function because it directly reflects how well the kidneys are filtering waste from the blood. It’s a waste product produced at a relatively constant rate from muscle metabolism and is cleared primarily by glomerular filtration. When kidney function declines (as can happen with certain chemotherapy drugs or in nephrotoxic scenarios), serum creatinine rises, and we can estimate the glomerular filtration rate (GFR) from it to guide dosing and detect nephrotoxicity. ALT indicates liver cell injury, amylase points to pancreatic (or salivary) issues, and albumin reflects nutritional status and liver synthetic function, not the real-time filtration ability of the kidneys.

Creatinine is the best measure of kidney function because it directly reflects how well the kidneys are filtering waste from the blood. It’s a waste product produced at a relatively constant rate from muscle metabolism and is cleared primarily by glomerular filtration. When kidney function declines (as can happen with certain chemotherapy drugs or in nephrotoxic scenarios), serum creatinine rises, and we can estimate the glomerular filtration rate (GFR) from it to guide dosing and detect nephrotoxicity.

ALT indicates liver cell injury, amylase points to pancreatic (or salivary) issues, and albumin reflects nutritional status and liver synthetic function, not the real-time filtration ability of the kidneys.