Just googled half-life of Testosterone Cypionate.
500 to 1000 sure seems like a huge swing for biweekly (E3.5 Days) doses of 80mg.
What am I not understanding about the eight day half-lifes?
I do know you should really put in an effort to draw blood at the exact time every time and at your trough to try and removes as many variables as possible.
If you don't you really can't compare one test to another our harmone lvl fluxuate too much.