Generally can toss the file into VirusTotal and compare results across 20+ different AV solutions at once and get a good bead on whether it's a false positive or not that way. We do as part of our release process to make sure they don't all light up, but there always seems to be 2-5 that show up regardless of what we do. Most of them are related to dependencies we have. Chromium seems to tick em off the most.