The majority of my science pre-reqs are definitely less than 10 years old, but I have a few pre-reqs like English and basic biology that are right at 10 years. I am not planning to apply this upcoming cycle but for the entering class of 2022. I think I started general chemistry and microbiology back in 2012. The majority of my pre-reqs are from that time onward to about 2015 (I was knocking out some courses for my biology degree that weren't exactly pre-med courses). I did take some upper-level comparative anatomy and physiology, biochem, etc. and aced everything except for literally 2 Bs. I did organic chem around the latter part of 2013/early 2014 with my labs. Aced those, too.
I shouldn't need to go back and retake my pre-reqs?