Hi @mgrimes5, I's like to welcome you to Mayo Clinic Connect. You came to the right place to seek possible causes of high platelet count with a negative JAK2 test.
I know that @shenriq and @mjpm2406 had positive JAK2s but perhaps they can lend some insight on what their physicians tested for prior to finding the mutation.
@mgrimes5 has your physician checked for an infection, anemia or low iron?
@jakedduck1
@mgrimes5
Good morning,
Has your spleen been removed?
Jake