Yes, that is what I always thought, and so assumed that, if my test has gotten higher -- and it did -- that must mean the primo I'm using is fake, maybe test propionate or something. But sounds like you're saying that the labcorp test I took simply can't differentiate and registers everything as an increase in test.Conclusive results within the normal variation of the human body. Even if you just took the right blood test every week running the same Test/same frequency your results would come back ~+/- 100 ng/dl.
Primo (or any other AAS) doesn't increase blood levels of testosterone while using exogenous testosterone. Actually, it's the exact opposite when you consider Total Tesotsterone mediated by SHBG. But that's a whole nother rabbit hole.