I'm guilty of this too. Blood work. Seems especially important for first time cycles. We are just guessing how to dose AI's. Everyone's different. Everyone's gear is probably dosed different. Blood work before, during, and after would really allow you to nail down your future cycles when adding more compounds. Then when there's issues its much easier to figure out a solution quickly. I wish I did a baseline before I ever started. After several cycles I might just do a test only cycle and see what's really going on throughout. Always been guessing. Only time ive done blood work is 6 weeks after pct to see how I recovered.