What is the minimum normal Glomerular Filtration Rate (GFR)?

The minimum normal Glomerular Filtration Rate (GFR) is considered to be 60 mL/min/1.73 m². GFR is a key indicator of kidney function, measuring how much blood is filtered by the glomeruli in the kidneys. A GFR of 60 mL/min is often considered the cutoff for normal kidney function, below which there may be indications of some degree of renal impairment.

In clinical settings, a GFR below this threshold is significant as it can categorize patients into different stages of chronic kidney disease (CKD). Stages of CKD are often classified based on GFR, which enables healthcare providers to assess kidney function and make decisions about treatment options more effectively.

While understanding GFR is crucial for evaluating kidney health, it's also useful to know the context for the other values. A GFR of 45, while lower, indicates more significant impairment and may warrant a greater concern regarding renal function. Similarly, GFR values of 75 and 90 are above the normal minimum, indicating healthier kidney function, but do not define the minimum normal threshold.