Research from 2019Trusted Source defined age-related A1C percentage levels in healthy populations as:
Age group | All respondents | Men | Women |
---|---|---|---|
20–39 years | 4.0–6.0 | 4.1–6.1 | 4.0–5.8 |
40–59 years | 4.1–6.2 | 4.0–6.2 | 4.1–6.1 |
≥ 60 years | 4.4–6.6 | 4.4–6.6 | 4.4–6.5 |