The A1C sometimes referred to as the Hemoglobin A1C, glycosylated hemoglobin, glycated Hemoglobin and HbA1C measures your husband’s average glucose from 60 to 90 days. When your husband tests his blood sugar with a blood glucose meter, this only tells him what his glucose level is at that moment in time. It does not accurately reflect the highs and lows he experiences nor does it reflect the direction his glucose could be trending.