Is 280 at trough too high?

I just got my first 3 month labs back & my e was 280 pg/ml & my T was at 20 ng/dl. The blood draw was taken at trough about 3-4 hours before my scheduled injection. I inject 5mg valerate every 5 days & I'm also on a blocker (cpa). Is this too high? I've heard that having high e can possibly stunt your transition/breast growth & I'm worried.