There are various ways to donate and get labs.
Recall Test E and CYP peak at 24-48 hours and then have a downward spiral until day 10-11 whereas about 90%+ of users are at baseline again
The old theory that it lasts 14+ days is actually incorrect. It certainly is in the system that long but it cannot sustain a feasable level
Anyways, the most standard method is to Draw Bloods 7 days "after" your last injection. This is what is standard in the medical field. Not necessarily in bodybuilding.
This is the reason for many many an issue. Some guys will draw say 3 days after a shot and then praise a brand. Someone else can draw 7 days after and then show a lower n/dL with a diff brand and now slam the different brand, when in reality that is absolutely not a fair comparison.
Follow? My point being, whatever "you" choose to test your labs, keep it consistent. Do not change methods when you change brands, etc, etc.