On Call Plus Glucometer is a user-friendly, automatic blood glucose meter from ACON Laboratories, providing precise quantitative measurements of capillary whole blood glucose for self-monitoring in diabetes care. Measuring 85mm × 54mm × 20.5mm and weighing 49.5g (with battery), it features a large LCD display showing results (20-600 mg/dL range), code number, date/time, and symbols for strips, blood drop, memory, and low battery. Powered by one CR2032 3.0V coin battery (lasting ~1,000 tests or 12 months), it operates at 5-45°C and 20-90% humidity. Key highlights include automatic coding via chip for strip calibration, audio beeps (on by default: startup, sample detection, result ready; error triples), 300-test memory with timestamps and 7/14/30-day averages (excluding controls/invalids), data port for PC transfer (9600 baud), and alternative site testing (fingertip, palm, forearm) with adjustable lancing. Accuracy meets standards with ±20% variance from lab under normal conditions; HCT 30-55% optimal, though up to 65% possible with minimal error. Interferents like high Vitamin C may elevate readings; triglycerides/cholesterol have negligible impact. Usage: Insert strip (matching code), apply 1μL blood to fill check window, wait 10s countdown for result—mark invalid via buttons if needed. Run control tests weekly or with new strips using provided solution. Store meter dry in case, away from extremes; strips at 15-30°C sealed (discard 3 months post-opening). Clean exterior only; discard used lancets safely. Not for diagnosis—consult professionals for targets (e.g., fasting 70-100 mg/dL).