The HemoCue® HbA1c 501 system is a fully automated point-of-care testing system for HbA1c. Hemoglobin A1c (HbA1c) is a glycated form of hemoglobin that is primarily tested to determine the average amount of glucose (sugar) present in a patient's blood over the past three months. Blood sugar testing is a crucial part of diabetes management and is essential for millions of diabetics.