I don't think foreign or domestic matters. Since steroids are so cheap to make it would be stupid to go through the expense of making fake stuff and juts go out of business in a few months. (Not that those places don't exist).
The biggest problem is dosage. I believe most UG gear is severely underdosed. ANd with the expensive stuff like Primo, who know if they just cut it with something cheaper. There was a place years ago that sold 200 mg amps of primo. Upon testing it turned out to have roughly 50 mgs of primo 25 mgs of EQ and 25 mgs of test.
Nobody but the real primo pros could tell.
The biggest problem is dosage. I believe most UG gear is severely underdosed. ANd with the expensive stuff like Primo, who know if they just cut it with something cheaper. There was a place years ago that sold 200 mg amps of primo. Upon testing it turned out to have roughly 50 mgs of primo 25 mgs of EQ and 25 mgs of test.
Nobody but the real primo pros could tell.