Basophils (%)

Basophils (%) shows the share of basophils among white blood cells, offering context for allergies and inflammation.

Last reviewedJune 16, 2026
Whole blood
sample type
~3 mL
blood needed
~7 days
results in app
Any time of day
best timing
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In short

This is the share of your white blood cells that are basophils, given as a percentage. Basophils release histamine during allergic and inflammatory reactions.

The percentage comes from the differential part of a complete blood count and is best read next to the absolute basophil count.

Blood Health (CBC & Iron)
Reviewed against DGKL reference practice.
Why it matters

Why test this?

The basophil percentage is normally very small. A raised value can appear in allergic and inflammatory conditions and, less often, in certain blood disorders. Because a percentage shifts whenever another cell type changes, it is interpreted together with the absolute count.

Reference ranges

What is a normal result?

Aniva reads your result against research-backed ranges, not just the lab's wide normal. The reference shown below is specific to this biomarker.

Typical adult range, automated differential:

MeasureTypical range
Basophils, percent of WBC0 to 2 %

Ranges are guidance only and vary by laboratory and analyser. Read against your lab's own reference range, aligned to German practice (DGKL).

Ranges are guidance and vary by lab and assay, aligned with DGKL practice. Always read your result against your own lab's reference interval.
What you'll learn

What insights will this test give you?

You learn what proportion of your white cells are basophils. With the absolute count and the rest of the differential, it helps point toward an allergic or inflammatory process.

What affects your level

What can affect this result?

What can skew the result

The percentage moves when any other white cell type rises or falls, and small absolute changes look large here. Allergic and inflammatory conditions raise it. Delays before analysis can affect the result.

Best interpreted with

Best read with the absolute basophil count and the other differential percentages, since they all add up to 100 percent of the white cells.

How testing works

How is this tested?

Sample
Whole blood
Blood needed
~3 mL
Method
Flow cytometry
Best timing
Any time of day
FAQ

Common questions

What does Basophils (%) tell me? It shows the share of basophils among your white blood cells, helping interpret allergy or inflammation patterns.

What can affect my result? Recent infections, allergic flares, corticosteroids, estrogen therapy, lithium, stress, pregnancy, intense exercise, and dehydration can shift values.

Do I need to fast? No. Fasting is not required for this test.

How often should I test this? Usually when a clinician orders a CBC. If results are unexpected, a repeat in a few weeks may be suggested.

How long do results take? Results are usually ready in about 7 days.

What should I discuss with my clinician? Symptoms, allergies, recent illnesses, medicines and supplements, thyroid history, and prior CBC results.

Related biomarkers

Markers usually read alongside this one

On this page
Why testReference rangesWhat you'll learnWhat affects itHow testing worksSourcesFAQ
✦ Privately insured? German PKV usually reimburses.

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