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Absolute Eosinophil Count
Abbreviation: AEC
Panel: Complete Blood Count (CBC) · All complete blood count tests
Typical adult reference range
| Conventional units | 0.0–0.5 ×10³/µL |
| SI units | 0.0–0.5 ×10⁹/L |
Ranges vary between laboratories and methods — compare your result with the range printed on your own report.
What a high or low result can mean
High absolute eosinophil count: high values can be seen in allergic conditions, asthma, and some parasitic infections.
Low absolute eosinophil count: low values are usually not clinically significant and may occur with acute stress or steroid use.
These are associations, not a diagnosis: the same result can have several causes, and your clinician interprets it with the rest of your results and history.
Related tests — Complete Blood Count (CBC)
Please note: Reference ranges vary between laboratories, and between the methods and instruments they use — the range printed on your own report is the one your result should be compared with. A result outside the range is not by itself a diagnosis, and a result inside it does not rule out illness. These pages are an educational summary, not medical advice: always discuss your results with the clinician who ordered them, who can interpret them in the context of your health and history.