Since that won't avoid a possible biological passport abnormality any ideas what this new drug could be? Anything that boosts RBC or Hematocrit risks getting picked up. Whether the drug itself is detectable is irrelevant for oxygen vector doping. Even autologous transfusion can in theory be detected by abnormalities (e.g. age of RBCs).I think his team doctor has maybe tried a new dose of drug that is simply undetectable and is working well for he and MVP.
To be clear, I am not saying WvA or MVdP aren't doping just asking for better logic and reason in this search for an explanation for the crazy speeds since the pandemic.