HbA2 by age and sex
How the usual range for HbA2 changes with age, as labs print it.
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The usual range at every age
The reference range labs print, for each age group. Ranges differ a little between labs, so the range on your own report is the one your result is judged against.
Use the left and right arrow keys to step through the age groups. Every range is also in the table below.
| Who | Usual range |
|---|---|
| under 0.1667 | 0–1.4 % |
| 0.1667–-0.75 | 0–2 % |
| 0.25–-0.6667000000000001 | 0.1–2.6 % |
| 0.3333–-0.5832999999999999 | 0.8–3 % |
| 0.4167–-0.5 | 1.5–3.3 % |
| 0.5–-0.25 | 1.8–3.5 % |
| 0.75–1 | 1.9–3.5 % |
| 2+ | 2–3.5 % |
Sources: ARUP Laboratories, American Family Physician, Mayo Clinic Laboratories, University of Iowa Hospitals & Clinics, NHS England (NHS Sickle Cell and Thalassaemia Screening Programme)