I am a 36-year-old female, 5’5" and 150 lbs, and I’ve been sober for over two years now. My older brother suffered strokes at ages 6 and 32; following the second one, his kidneys failed, though his transplant from six years ago is still working great. Given his medical background, how concerned should I be about my own eGFR? I recently had a physical for a community college medical program and noticed my blood work has shown an eGFR of 60 since at least January 2023. Since I stopped drinking, I was under the impression my liver and kidneys were healthy, but my primary care physician is somewhat hands-off—they didn’t even mention I was pre-diabetic once. I plan to reach out to them this Monday, but I would truly appreciate any guidance from a doctor here! 
Hi. Just so you know, eGFR is a calculated value used to determine the stage of kidney function. Although 60 is right on the edge, it would be helpful to know your BUN (Blood Urea Nitrogen) and serum creatinine (SCr) numbers as well.
Take a look at the reference range on your results. In my region, some labs still use “>60” as their maximum value, meaning the report won’t show anything higher than that.
A low eGFR without any symptoms isn’t typically considered failure unless the levels are extremely low. I’d suggest not stressing unless you actually start feeling unwell. Hope that’s helpful.