Re:been on 20+ weeks
No mate, studies have shown you can run up to 2500iu several times a week without desensitization. It could be higher in reality.. all that about prolonged use is just more bro science.
I wouldn;t bother with bloods either.
Only reason i've ever booked bloods, as i have recently is post cycle, to assess how my recovery is going and purely to determine whether or not i can get back on earlier...
Make sure i'm not overdoing it.