Is it possible to come out of stage 2 to stage 1 CKD?
Yes, it is genuinely possible to move from Stage 2 back to Stage 1. Stage 2 CKD means an eGFR between 60 and 89 with markers of kidney damage present — things like protein in the urine or structural changes on imaging. Stage 1 means an eGFR above 90 with those same damage markers still present.
The eGFR number itself can recover, particularly in younger patients, those who achieve excellent blood pressure control, or those whose underlying cause (a urinary tract infection, a short-term medication, a period of dehydration) resolves. It is not guaranteed, but it is documented and it happens.