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Basophils

Hematology · also called Basos

What it measures

The least common white cells; they release histamine in allergic reactions. A raised count is an important clue to myeloproliferative neoplasms.

Specimen and preparation

Reference range

GroupRange
Adult (%)0–2 %
Adult (absolute)0.0–0.1 ×10⁹/L

Reference ranges differ between laboratories, methods and populations. Always use the range printed on your own lab report.

Causes of high values

Causes of low values

Method

Automated differential with smear review

Good to know

Basophilia is an early sign of CML and of accelerated phase disease; confirm on a blood film.

Related tests

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