#1 Ketone test in Europe. Recommended by leading ketogenic doctors, scientists and coaches. Our GK Dual ketone teststrips are admired for their accuracy. Used daily by thousands of ketonians, and health professionals. ✔ 25x Ketone test strips for use in GK Dual meter ✔ 2 Highly accurate blood ketone monitoring ✔ Easy to use ✔ Recommended by leading ketogenic doctors, scientists, coaches ✔ Measures from 0.0 mmol/L ~ 8.0 mmol/L