Basophils

Complete Blood CountImmunity & InflammationBlood

Basophils are white blood cells that protect the body from infections and allergens. They release histamine, which triggers the symptoms of an allergic reaction, and heparin, which helps prevent unwanted blood clots.

Why it matters: Abnormal basophil levels may indicate a condition, though a healthcare provider needs further tests to confirm a diagnosis.

Source · Cleveland Clinic — what it is, why it matters, related conditions

Reference Range
0.0 – 0.210x9/L
0
0.2LowNormalHigh
Associated Conditions
Hyperthyroidism, or an overactive thyroid gland, which a low count is sometimes a sign of
Related Markers
White Blood CellsEosinophils
Common questions

What is Basophils?

Basophils are white blood cells that protect the body from infections and allergens. They release histamine, which triggers the symptoms of an allergic reaction, and heparin, which helps prevent unwanted blood clots.

What might a high or low Basophils mean?

Abnormal basophil levels may indicate a condition, though a healthcare provider needs further tests to confirm a diagnosis.

What is the typical reference range for Basophils?

The general-population reference range shown here is 0 – 0.2 10x9/L. Reference ranges describe the general population and are not a personal target — discuss your results with your physician.

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Basophils %EosinophilsEosinophils %ESRHematocritHemoglobinLymphocytesLymphocytes %MCHMCHC

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