Using the 24mL Testosterone Enanthate 250mg every four days since mid Novermber of 2019 until the present. My test levels went from under 350 when tested in early November of 2019 to over 2776 when tested late January 2020.I Highly recommend this seller and this product, I will be lowering my dose a bit and taking it every five days from know on, a little of this stuff goes a long way, at least for me.