Should I be worried if my doctor wants to do more blood tests?
No, hardly it will take a few investigations for better diagnosis
A high hemoglobin count occurs most commonly when your body requires an increased oxygen-carrying capacity specifically if you smoke. Sometimes It can be genetic as well
One can have low blood cell count due to aplastic anemia, cancers and certain antiviral medications which are normally given to HIV patients.
The symptoms of High or low MCH levels are shortness of breathe and rapid heart beat