During the 7 months following CCRT, the potassium level was in the normal range of 3.7 to 4.1 mmol/L, and from March 2024 (4 months ago), the potassium level was low at 2.5 to 3.1 mmol/L. The patient was also diagnosed with hypertension 3 years ago and prescribed valsartan 80 mg ...