I am unable to make a diagnosis based on the information that you present. If your estimated glomerular filtration rate (eGFR) has been less than 60 milliliters per minute per 1.73 meters squared and has been like this for more than three months, then you may have Stage 3 chronic kidney disease (CKD). I cannot tell you why or what to do without performing a complete history and physical examination. I suggest that you consult with your physician about your concerns. Essential thrombocytosis is not commonly associated with CKD. The blood disease can be associated with gout and elevated blood uric acid and this can cause CKD. I suggest that you have further testing for CKD.