Blood Health
Band Neutrophils %
What This Marker Tells Us
Shows what percentage of your white blood cells are immature neutrophils (“bands”), indicating how rapidly your bone marrow is responding to immune stress.
Why It Matters
A rising percentage is an early sign of bacterial infection or acute inflammation. It reveals immune activation before symptoms peak.
How to Interpret Your Trends
Increasing percentages indicate your body is shifting toward neutrophil production—often due to bacterial infection or acute inflammation. Declines reflect recovery.
What Influences This Marker
Bacterial infections, acute inflammation, trauma, surgery, overtraining, smoking, steroids. Viral infections typically do not raise this percentage.
How Your Team Uses It
Your team uses elevated percentages as a cue to pull back training intensity, increase rest, support hydration, and recommend prompt medical evaluation if infection is suspected.
Related Signals We Also Review
Absolute neutrophils, WBC count, hs-CRP, temperature trends.