You need your hematologist or experienced Doctor to evaluate. I assume you are talking his Hemoglobin? The doc looks at the whole picture in the CBC, CMC, etc and also the meds he is taking.... Like is he on prednisone or other meds that may impact the numbers. Don't worry about small changes in one number.... keep track of the trends in your blood work. Put the info in Excel or on graph paper with the upper and lower limits there as well. Good luck!