I would recommend microdosing test prop. That's what the pro athletes do not to get caught and it works well.
You are using a very small dose of something with a short ester so it's less likely to show up on an AAS test because it'll be out of your body quickly.
Keep in mind that video I showed you is mostly about pot.
Microdosing is the most effective way to mimic natural Testosterone levels and minimise side effects. We explain why in this article.
themenshealthclinic.co.uk
Var would just show up on a test period. The levels of DHT it increases are artificial, it's the var that's acting as the DHT (if that makes any sense) so it would more than likely lower your test/epitest ratio by negative feedback through the HPTA loop. I don't know what that looks like on a drug test, but if your test/epi test levels are too low, it may trigger a harder investigation into.
But honestly, I have no idea. I've done consulting work for college athletes in the past and I've helped them do microdosing of test prop (and sometimes NPP although I don't recommend this).