I had a blood test done during to fast heart rate and high blood pressure and it has come back as high blood platelets but now I have need a chest xray, a scan on my pelvis and uterus and I have to do a stool sample . I did the thing you should not do and Google what it meant . I am now worried as I get a bad side and looser stool every so often . Did anyone get diagnosed with anything when they had high blood platelets.