Tricky inquiry to answer as we are each affected/react differently to Primo and it's AI properties. Bloodwork, unfortunately would be the one surefire way to dial it in and be at an even medium. Otherwise it'd be a game of trial/error and throwing darts in the dark while blindfolded. As Jfit stated, it would also be a fairly expensive AI method. Masteron works well in this regard also.

Thats an expensive AI. Unless you have another reason to use Primo, just use a normal AI. I cruise with Test Mast sometimes after a cut or post show. Mast works as a nice AI for me but also nukes my hair

It has AI properties but depending on test dose will determine your estro levels. If primo is too high, and test is too low, it may cause you to experience crashed estro. My test doses were always moderate so I never needed an AI on primo but like Makwa just told you, bloodwork will reveal all.

Just use an actual AI, lot less complicated.

You were asking me about this earlier and I wish I had an exact answer for you. Like I said, its ai properties can be different for different people so I can't just throw any dosage out there. But once you get bloods you can troubleshoot and figure out which dose is best for you as an ai. If I run primo again I'll do the same myself. I'm a low e2 converter so for me it didn't take that much primo to wipe me out..

You are going to need a lot of bloodwork to dial in that primo if trying to use solely as an AI. It varies so much for each individual from zero AI properties to having to run test 1:1 or even 2:1 with primo to maintain estro in acceptable range.