My platelet count is slightly below the normal range. One of the symptoms is easy bruising, which I have. This is the first time it has dropped below normal. Platelet Count 143 150-400 A low platelet count can be caused by some sort of internal bleeding. I take 6 grams of fish oil per day and 600iu of vitamin E d-alpha-tocophyrel. Both of these thin the blood, which I'm thinking may be causing this. Anyone have any information about this?