Continuous glucose monitor trend alarms
| Trend alarm | Medtronic Guardian setting | Interpretation |
| Low | Low alert SGC=3.1 mmol/L AND fall alert ≥1 for 10 min* | BGC expected to be 2.5 mmol/L |
| Low alert SGC=3.1 AND ≤2.5 mmol/L after 20 min† | BGC falling by 0.03 mmol/L/min | |
| High | High alert SGC=5.6 mmol/L AND rise alert ≥1 for 10 min* | BGC expected to be 6.2 mmol/L |
| High alert SGC=5.6 mmol/L AND ≥6.1 mmol/L after 20 min‡ | BGC rising by 0.03 mmol/L/min |
SGC/BGC, sensor/blood glucose concentration. Medtronic Guardian provides an SGC reading every 5 min.
*Fall/rise alert one indicates SGC is changing by 0.06 mmol/L/min; fall/rise alert two indicates SGC is changing by 0.11 mmol/L/min; fall/rise alert three indicates SGC is changing by 0.17 mmol/L/min.
†If the SGC is ≥2.6 after 20 min, no trend alert is signalled. Snooze time for device low alert set to 20 min.
‡The BGC 97th percentile for healthy breastfed babies >72 hours is 6.0 mmol/L.23