You may have noticed a change in your kidney function over the past few years.  One important thing to note is that the GFR calculation changed in 2021.  This video goes through a numerical comparison between the old and new calculations.

Old calculator – https://www.niddk.nih.gov/health-information/professionals/clinical-tools-patient-management/kidney-disease/laboratory-evaluation/glomerular-filtration-rate-calculators/historical

New calculator – https://www.kidney.org/professionals/kdoqi/gfr_calculator