“I am shocked and devastated by WADA's unfavorable report on me. I only found out this morning and I still can handle it.
I also just saw that the fight was canceled - I didn't have any chance to bring my innocence to a decision.
I can confirm without a shadow of a doubt that I did not use a prohibited substance either in this camp or at any point in my life. I am completely innocent and please give me time to go through the process of proving this without jumping to conclusions or media judgments.
I insisted on 24/7 WADA testing for this fight, as I have done voluntarily and at my own expense in all of my fights over the years.
This is not the first time I've been told that I tested negative for a substance I didn't use. And, like last time, I will again prove that I am completely innocent.
I am very disappointed with boxing fans who will miss out on what should have been a great event," White wrote on his social networks.
White's fight with Anthony Joshua was scheduled to take place on August 12 in London.