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Complete blood count

Monocytes, %

General reference: 3–11 %

What it shows

The monocyte percentage is the share of white blood cells that are monocytes. Monocytes circulate briefly and then enter tissues as macrophages, where they clear microbes and debris and help coordinate longer-running inflammation. The figure speaks for the phagocytic and repair side of the immune response.

No readings for this marker yet.

High and low values

A raised share most often appears in recovery from acute infection, in chronic infections and in chronic inflammatory conditions, and less often it points toward a disorder of the bone marrow. A lowered share is a weaker signal on its own and is seen most often with steroid treatment or in acute overwhelming infection. Either direction is a reason to repeat the count and let a doctor read it in context, not a conclusion in itself.

What affects the result

The value depends on recent and current infection, on the phase of an illness, and on steroid or chemotherapy exposure, and small percentage swings are within ordinary counting variation. It is interpreted alongside the absolute monocyte count and the rest of the differential, particularly neutrophils and lymphocytes, and against the total white cell count.

Reference ranges are general adult values and depend on lab, assay, age and sex. For orientation, not diagnosis — discuss results with your doctor.