Basophils
Immune system healthBasophils release histamine during inflammatory and allergic reactions.
Reference range
1.8
Normal
High
%
Source: lab benchmark
Reference ranges may vary between labs and assays. Always interpret results with your healthcare provider.
Why this matters
Basophil levels can act as an early indicator of immune system activity. Elevated levels may signal allergies, chronic inflammation, or certain blood disorders, while low levels are usually not concerning. Lifestyle factors such as stress, sleep, and overall health can influence basophil counts. Monitoring helps assess allergic tendencies and inflammatory conditions.
How this connects to other biomarkers
- Elevated Basophils with persistent elevated WBC raise concern for a myeloproliferative disease (a chronic bone-marrow disorder — CML, polycythemia vera) — follow with a peripheral blood smear and JAK2 gene testing.
- Mild elevation can occur with allergic disease, underactive thyroid (high TSH), or chronic inflammation.
- Low Basophils are usually clinically silent.
Included in
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