Hello User. Went through your post, the elevated RBC count is seen in smokers, people living in high altitude or sometimes if person is dehydrated.       If you have any such thing as mentioned above that could be the cause. People with respiratory problems like asthma or COPD can also have such things and RDW is reflection of your elevated RBC count.     It is not a serious problem any way unless you have any above problem which will need to be addressed. Regards