Talk to Diabetologist on About Diabetes.

I have done my mother's HbA1C 10 days back which was 5.1 normal but me ik month se zayada ho gaya hai me Ami ki BSR our BSF check krta hun which sometimes normal sometime above the normal limit BSR sometimes normal sometimes 180 tak b jati hai what does it mean my mother is prediabetic or is there any other reason of different blood sugar levels .