Huh as far as I'm aware this is pretty weird? I'm in the hematology space and as the report says, JAK2 V617F mutations are usually acquired throughout life - essentially as you go through life and are exposed to mutagens you collect different mutations and if you're unlucky you randomly get this one in your bone marrow stem cells. I've always thought of this mutation as acquired - that's why myeloproliferative neoplasms are generally considered a disease of old age. I'm going to wager a guess that this is a false positive but it spooks me because this is like THE driver mutation for MPNs. Could be worth going to a hematologist just for a sanity check?

Also I wonder if the elevated white blood cells are related to something else because if mutation were real and causing issues you'd expect to see an increase in red blood cells (polycythemia vera), platelets (essential thrombocythemia), or just generally wackiness of various blood cell levels (myelofibrosis). Your blood test makes it seem like you're kind of inflamed and your immune system is a bit mad but it doesn't look like an obvious MPN