Interpret Your Basophils Results
Enter your Basophils value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.
Medical Disclaimer
This AI-generated interpretation is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Results may vary based on individual health factors not captured here.
Always consult a qualified healthcare professional before making any health decisions. Read full disclaimer →
Basophils Normal Ranges
Basophils are the least common white blood cells, making up less than 1% of circulating leukocytes.
| Age Group | Reference Range | Unit | Notes |
|---|---|---|---|
| Adults (18–64) | 0 – 0.1 | ×10³/µL | — |
Also reported in: %.
Why Doctors Order the Basophils Test
Basophilia (elevated basophils) is rare and should always prompt consideration of chronic myeloid leukemia (CML), polycythemia vera, or essential thrombocythemia. A markedly elevated basophil count in CML precedes blast crisis.
How to Enter Your Basophils Result
Basophils can be reported in ×10³/µL or %. Choose the unit printed next to your result on the lab report so it is compared with the matching reference range.
What a Low or High Basophils Can Be Associated With
Below the reference range
- Corticosteroid therapy
- Acute allergic reactions (paradoxical drop due to degranulation)
- Hyperthyroidism
Above the reference range
- Chronic myeloid leukemia (CML) — most important cause
- Polycythemia vera
- Essential thrombocythemia
- Severe allergic reactions
- Hypothyroidism
These are common associations, not a diagnosis. A single result is read alongside your symptoms, history and other tests — discuss it with your doctor.
What Can Change Your Basophils Result
Before you read too much into a result, consider whether any of these applied:
- Steroids (lower basophil count)
- Sample age (basophils degrade quickly in stored samples)
Preparing for the test: No preparation needed. Part of CBC differential.
Symptoms That Often Prompt Basophils Testing
- Usually asymptomatic
- Pruritus (itching, due to histamine release)
- Urticaria (hives)
- Symptoms of underlying myeloproliferative disorder (fatigue, splenomegaly)
Want the full clinical guide to Basophils?
Reference ranges, causes, symptoms, preparation, and FAQs.