BPC-157 Detection Time?

I had a minor rotator cuff injury, which i tried to heal with BPC-157. Over the last 3 weeks, my shoulder got better and better, but i have to compete in an Olympic Weightlifting competition in 8 days. If i cease the usage of BPC-157 now, would it be possible to fail a drug test? Can they test that at all? I have never been tested before, but i’m really nervous about it.

BPC supposedly has a 4 hour half life, which would mean 8 days would be plenty of time to get clean.