Public record
HbA1c (glycohemoglobin): the public record
Each table is computed from the named federal dataset as of its data date; the method is under each one.
Population data
How HbA1c (glycohemoglobin) is distributed in US adults
In the 2021 to 2023 US national health survey, the median HbA1c (glycohemoglobin) was 5.2% in men aged 20 to 39 and 5.2% in women aged 20 to 39. Half of people in each group fall below the median; the row notes give the range covering the middle 90%.
| Measure | Value | Note |
|---|---|---|
| Men 20 to 39, median | 5.2% | middle 90% of people: 4.7 to 6.0; 632 people tested |
| Men 40 to 59, median | 5.6% | middle 90% of people: 4.9 to 8.4; 738 people tested |
| Men 60 and over, median | 5.7% | middle 90% of people: 5.1 to 8.2; 1,216 people tested |
| Women 20 to 39, median | 5.2% | middle 90% of people: 4.7 to 6.0; 819 people tested |
| Women 40 to 59, median | 5.5% | middle 90% of people: 4.9 to 7.8; 933 people tested |
| Women 60 and over, median | 5.7% | middle 90% of people: 5.1 to 7.9; 1,429 people tested |
How this was calculated
Computed survey-weighted 5th, 50th and 95th percentiles from the CDC public file by sex and age band, using the sample weight WTPH2YR. Groups with fewer than 50 people are left out.
US adults aged 20 and over who gave a sample in NHANES 2021 to 2023, CDC variable LBXGH (Glycohemoglobin (%))
These are population distributions, not clinical reference ranges or treatment targets. They include people with and without health conditions and people on medication. Laboratories differ in method and units.
Articles on HbA1c (glycohemoglobin)
- How Metformin Affects HbA1c: Expected Reduction, Timeline, and Monitoring
- How Ozempic Affects HbA1c: Expected Reductions, Timeline, and Monitoring
- Crestor Effect on HbA1c: What Rosuvastatin Does to Your Blood Sugar
- How Zepbound Affects HbA1c: Clinical Data on Tirzepatide and Glycemic Control
- HbA1c Longevity-Medicine Target Ranges: What the Evidence Actually Says