Neutrophils (absolute & percent)

Routine annual

also anc, neutrophil count

What it isNeutrophils are the most abundant white blood cell, made in the bone marrow. They circulate briefly before migrating into tissues to engulf and kill bacteria and fungi.

DoesServe as the first responders of innate immunity, particularly against bacterial and fungal infections.

GoodA mid-range neutrophil count signals balanced immunity ready to respond without excess inflammation.

BadElevated neutrophils indicate bacterial infection, acute inflammation, physiological stress, smoking, or steroid effects. Sustained elevation predicts cardiovascular disease. Very low counts (neutropenia) raise serious infection risk.

Standard

Absolute 1.4–7.0 K/µL; 40–70% of WBC.

Optimal

2.0–4.0 K/µL, 50–60% of WBC (narrow target)

Modifiers

Rises with exercise transiently, stress, smoking, glucocorticoids.

How to optimize

Lifestyle: Address chronic inflammation drivers; quit smoking; sleep 7–9 hours; manage stress.
Diet: Mediterranean pattern; cut ultra-processed food.
Supplements: Omega-3 EPA+DHA (2–4g/day), curcumin (500mg 2×/day), vitamin D3.
Peptides: Thymosin alpha-1 supports immune balance.
Drugs: Treat underlying infection or inflammation.

within Blood Cells