I used 300mg PureGear Cypionate weekly from M4BTEAM (Marrsel) and 1 dropper (2.5mg) Letro daily from Purchase peptides. The blood draw was taken 7 days after my last Cypionate injection. Estradiol measured 8.5 pg/mL and Total T measured 1412 ng/dL. These results are consistent with genuine products. In fact, my Estradiol has never measured lower with T levels this high. Obviously the Purchase Peptides Letro is a genuine AI. Passing Total T results should be about 1,345 ng/dL +/-139 ng/dL. Due to the crude nature of this protocol, passing results may vary greatly.