Don’t quote me on it, but it believe full saturation is 4 weeks, which is why they say to take bloods at 6 weeks and yeah, it’s the same, whether E or C.
I’ll let you know that pretty much as soon as you shoot your test, it’s in your bloodstream. My buddy was a clown and asked his doctor for a script to get his test checked and didn’t even think about it and pinned a big ass dose (front load) and then went to have his blood drawn the next day. Needless to say, his doctor called him as soon as the results came in and wanted to know what he might possibly be taking lol.