What symptoms,do i have to look for in case of polycythemia?my son,17,has 18,3 hemoglobine value and 54,3 hematocrit but platelets are normal,156k.

Probably okay: Junior may have been a bit dehydrated and in any case reference ranges are set so that several percent of healthy folks are out of range on either side. If this is his usual, he may have a high-affinity hemoglobin; I trust there's no right-to-left cardiac shunt and you're not mountain-dwellers, etc. Polycythemia vera doesn't affect teens. Don't ask about steroids, Dr. already did.