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hematologyHas Critical Values
Neutrophils
NEU· also: PMN, Segs
Clinical Overview
Neutrophils are the most abundant white blood cells and the first responders to bacterial infections. Elevated neutrophils suggest bacterial infection or stress; low levels (neutropenia) increase infection risk.
Reference RangesWHO/IFCC standards
| Age Group | Reference Range | Unit | Notes |
|---|---|---|---|
| Adults (18–64) | 1.8 – 7.7 | ×10³/µL | 40–75% of WBC |
Also reported in: %.
Critical (Panic) Values
Critical Low: < 0.5 ×10³/µL. Values outside these limits require immediate clinical attention.
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Related Topics
infectiondifferentialbacterialneutropenia