I wasn't feeling well, vertigo, extreme internal coldness and my blood was drawn and it was all normal except my RBC came up with Minor variations of size and shape. I did google it and came up with depending on what the shape are. Wouldn't they do that at the lab when they saw they saw variations or does the doctor have to order a specific test for that? My doctor has not gotten back with me yet, I saw the results online through LabCorp.