You could test my blood for everything you want and I guarantee you won't find any traces of EPO.
That would be rather concerning, as that would probably mean there is something seriously wrong with you. I'd get yourself checked out for severe anaemia.
(I get what you are saying though, about no exogenous epo, part of the problem is that as it is a naturally occurring cytokine, it's pretty damn hard to tell if someone is producing it naturally or topping it off exogenously).
That would be rather concerning, as that would probably mean there is something seriously wrong with you. I'd get yourself checked out for severe anaemia.
(I get what you are saying though, about no exogenous epo, part of the problem is that as it is a naturally occurring cytokine, it's pretty damn hard to tell if someone is producing it naturally or topping it off exogenously).