TABLE 3.

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

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).