CERA-CHEK ™ 's excellent and accurate performance characteristics comply with strengthened ISO quality standards in the detection range of 10-900 mg/dL (0.6 - 50 mmol/L) by means of 'maltose-interference free' FAD-GDH enzyme and advanced electrochemical readout technology. In addition to the world's largest detection range, NEONATAL and GESTATIONAL testing are available by'hematocrit-FREE" performance! 10 -70%).