From the test results it sounds like you are concerned about polycythemia vera which is where because of the testosterone, your body is making too many red blood cells. This is why it’s classed as a cancer although it is not malignant and with treatment it won’t affect your prognosis or lifespan.
Generally the treatment is phlebotomy (basically taking blood). Because the high number of blood cells means your blood is thicker it may increase the risk of blood clots (which is why you may be warned about heart attacks/stroke) so they may also give you anticoagulants to reduce the risk of clots forming.

To all those posting about hypochondria, just because the OP has previously admitted to having health anxiety doesn’t mean that this is all imagined. If someone posts about abnormal blood results and their fears about it, it is really unhelpful to tell them that it is all in their head.