For what it’s worth, my platelets have been fluctuating around the 600 mark since I was diagnosed with Essential Thrombocythemia 7 years ago, when I was a mere stripling of 69. Been on 1000mg of hydroxycarbamide ever since with no problems and haematology say it’s not worth trying a higher dose to try and reduce platelets further.
But one odd thing; I’m starting radiotherapy for prostate cancer this week and so got a baseline blood test to see what nasties it might do to bone marrow. Lowest count I’ve had since diagnosis - 475!
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