Blood count
Basophils
LOINC 704-7 · /uL
Ranges
Reference range: 0–200 /uL
What it is
Basophils are the rarest type of white blood cell. They release histamine and other chemicals involved in allergic and inflammatory responses.
Why it matters
Counting basophils helps round out the white-cell picture and can offer clues about allergies and certain rare blood conditions.
What high values can mean
A higher count can occur with allergies, chronic inflammation or, rarely, certain bone-marrow disorders.
What low values can mean
A lower count is common and usually not clinically meaningful on its own.
How to improve it
Basophils are not something you change directly; managing allergies and inflammation addresses the underlying causes.
Food & lifestyle
No specific diet changes basophils; an overall anti-inflammatory pattern supports immune balance generally.
Preparing for the test
Part of a complete blood count (CBC) with differential; fasting is not required.
When to talk to a doctor
Discuss a persistently high basophil count with a doctor, who will interpret it with the rest of your CBC.
Related markers
Sources
- MedlinePlus (NIH)
- Testing.com (AACC)
Content reviewed on June 26, 2026
Medical disclaimer
This content is for educational purposes only. It is not medical advice and does not diagnose, treat, or prevent any condition. Reference ranges vary between laboratories — always use the range printed on your report and discuss your results with a healthcare professional.
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