Complete Blood Count (CBC)

Neutrophils (%)

Normal range 40–70 % of WBC (0.4–0.7 fraction SI). Specimen: Whole blood (EDTA).

Also known as: segs, polys, PMNs.

40–70 % of WBCReference range

Reference range

Conventional% of WBC

4070

SIfraction

0.40.7

Specimen	Whole blood (EDTA)
Conventional range	40–70 % of WBC
SI range	0.4–0.7 fraction
Conversion factor	×0.01 (conventional → SI)
Panel	Complete Blood Count (CBC)

Convert any Neutrophils (%) result between units on the unit converter.

What is the normal range for Neutrophils (%)?

The standard teaching reference range for Neutrophils (%) is 40–70 % of WBC in conventional units, or 0.4–0.7 fraction in SI units. This value is measured in whole blood (edta).

Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population — always use the range printed on the actual result.

Above the range

Common causes of a high Neutrophils (%)

Acute bacterial infection
Inflammation, stress, or steroids
Tissue necrosis

Below the range

Common causes of a low Neutrophils (%)

Overwhelming sepsis
Chemotherapy or marrow suppression
Viral infection

At the bedside

Nursing considerations

Neutrophilia with bands (left shift) suggests acute bacterial infection.

Study aid

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