Most buyers only focus on cheap glucometer main units and easily fall into the trap of "free device but overpriced test strips in the long run". The core principles for choosing a home glucometer: prioritize accurate and stable test performance first, then ease of operation and long-term consumable costs. Only comprehensive cost performance counts.

Testing accuracy is the foundation of a glucometer. Always pick devices certified to authoritative official standards. Opt for models clearly complying with ISO 15197:2013 and GB/T 19634-2021, whose test errors meet industrial standards to deliver reliable daily monitoring data. Devices supporting a wide hematocrit (HCT) range of 30%–70% are recommended. They minimize reading deviations caused by anemia, hemoconcentration, dehydration and other physical conditions, suitable for most household users.

Home glucose testing demands simple operation and steady readings. A common misconception needs correcting: never add extra blood to a used test strip. If the blood sample is insufficient, discard the strip and retest. Supplementary blood ruins the chemical reaction system of the strip and leads to inaccurate results. Choose models requiring tiny blood volume, paired with adjustable-depth lancing devices to reduce pain. They suit elderly users and beginners and cut sampling errors.

The glucometer itself is a one-time purchase, while test strips account for recurring major spending. Individually wrapped strips cost more, so standard sealed tubed strips offer better value. Simply store them away from light and moisture and use within expiry dates. Verify stable online and offline supply of matching strips. Avoid obscure niche models to prevent price hikes, supply shortages or discontinued consumables later.