CGM Metrics and Targets for Adults and Pregnant Adults With Type 1 Diabetes: Recommendations of the International Consensus on Time in Range (43)
| CGM Metric . | Standard Targets* . | Pregnancy Targets . |
|---|---|---|
| Days CGM should be worn, n | 14 | 14 |
| Time CGM should be active, % | >70 | >70 |
| Mean glucose | Personalized target† | Personalized target† |
| GMI | Personalized target† | Personalized target† |
| Glycemic variability (coefficient of variation), % | <36 | <36 |
| TAR, level 2 | <5% of time>250 mg/dL(13.9 mmol/L) | — |
| TAR, level 1 | <25% of time181–250 mg/dL(10.1–13.9 mmol/L) | <25% of time>140 mg/dL(7.8 mmol/L) |
| TIR | >70% of time70–180 mg/dL(3.9–10.0 mmol/L) | >70% of time63–140 mg/dL(3.5–7.8 mmol/L) |
| TBR, level 1 | <4% of time54–69 mg/dL(3.0–3.8 mmol/L) | <4% of time54–62 mg/dL(3.0–3.4 mmol/L) |
| TBR, level 2 (<54 mg/dL [<3.0 mmol/L]) | <1% of time | <1% of time |
| CGM Metric . | Standard Targets* . | Pregnancy Targets . |
|---|---|---|
| Days CGM should be worn, n | 14 | 14 |
| Time CGM should be active, % | >70 | >70 |
| Mean glucose | Personalized target† | Personalized target† |
| GMI | Personalized target† | Personalized target† |
| Glycemic variability (coefficient of variation), % | <36 | <36 |
| TAR, level 2 | <5% of time>250 mg/dL(13.9 mmol/L) | — |
| TAR, level 1 | <25% of time181–250 mg/dL(10.1–13.9 mmol/L) | <25% of time>140 mg/dL(7.8 mmol/L) |
| TIR | >70% of time70–180 mg/dL(3.9–10.0 mmol/L) | >70% of time63–140 mg/dL(3.5–7.8 mmol/L) |
| TBR, level 1 | <4% of time54–69 mg/dL(3.0–3.8 mmol/L) | <4% of time54–62 mg/dL(3.0–3.4 mmol/L) |
| TBR, level 2 (<54 mg/dL [<3.0 mmol/L]) | <1% of time | <1% of time |
Targets were not recommended for GDM or pregnancy complicated by type 2 diabetes, as more data are needed. Bold type indicates targets that differ for pregnancy.
Goals vary for pediatric, older, and high-risk populations.
ADA recommends an A1C <6% (<42 mmol/mol) in pregnancy or a mean glucose <126 mg/dL (7 mmol/L).