Basophils %
Basophils as a percentage of total white blood cells. Basophils are the least common granulocyte; they release histamine in allergic reactions and participate in inflammatory responses.
Why it matters: Basophil elevation is uncommon but when present, warrants evaluation for allergic disease, chronic inflammation, or myeloproliferative neoplasms. Percentage is typically reported alongside the absolute count; both reaching the upper reference limit is more meaningful than either alone.
May increase with:
May decrease with:
What is Basophils %?
Basophils as a percentage of total white blood cells. Basophils are the least common granulocyte; they release histamine in allergic reactions and participate in inflammatory responses.
What might a high or low Basophils % mean?
Basophil elevation is uncommon but when present, warrants evaluation for allergic disease, chronic inflammation, or myeloproliferative neoplasms. Percentage is typically reported alongside the absolute count; both reaching the upper reference limit is more meaningful than either alone.
What is the typical reference range for Basophils %?
The general-population reference range shown here is 0 – 2 %. Reference ranges describe the general population and are not a personal target — discuss your results with your physician.
What can affect Basophils %?
It may be higher with: Allergic conditions, Hypothyroidism, Chronic inflammation, Myeloproliferative disorders (rare). It may be lower with: Acute stress, Hyperthyroidism, Acute allergic/anaphylactic reaction (transient dip).
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