When evaluating glucose meter technology, the most critical factor is measurement accuracy and precision, which must adhere to the ISO 15197:2013 standard (requiring 95% of results to fall within ±15% of a laboratory reference). Buyers should prioritize devices with HCT (Hematocrit) interference compensation (ideally ranging from 10% to 70%) to ensure reliability across different patient conditions. Additionally, look for GDH-FAD enzyme technology in test strips, as it is less susceptible to oxygen interference compared to older GOD-based enzymes.