Table 2

Comparison of sensor glucose measurements with point-of-care glucose values and blood glucose values

CriteriaBlood glucosePoint of care
MARD% difference between SG and reference (SG-reference)/reference × 10011.2%9.7%
ISO2003*84%90%
ISO2013†73%78%
  • ISO2003, ISO2013.22 23

  • CGM systems have previously been reported to show MARD results between 10% and 20% in adults and paediatrics.

  • *System accuracy standards of 2003 (ISO: 15197:2003) states that 95% of blood glucose results should be within ±0.83 mmol/L of laboratory results at concentrations <4.2 mmol/L or within ±20% of laboratory results at concentrations of >4.2 mmol/L.

  • †System accuracy standards 2013 (ISO: 15197:2013) require that 95% of blood glucose results should be within ±0.83 mmol/L of laboratory results at concentrations of <5.6 mmol/L or within ±20% of laboratory results at concentrations of ≤5.6 mmol/L.

  • CGM, continuous glucose monitoring; MARD, mean absolute relative difference; SG, sensor glucose.