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Blood count

Monocytes

LOINC 742-7 · /uL

Ranges

Reference range: 2001000 /uL

What it is

Monocytes are white blood cells that clear dead cells and microbes and help coordinate the immune response.

Why it matters

Their count adds information about chronic infection, inflammation and recovery from illness.

What high values can mean

A higher count can occur with chronic infections, inflammatory conditions or during recovery from infection.

What low values can mean

A lower count is less common and is usually interpreted in the context of the full white-cell picture.

How to improve it

Counts generally settle as the underlying infection or inflammation resolves.

Food & lifestyle

General anti-inflammatory habits — good sleep, balanced diet, not smoking — support healthy immune balance.

Preparing for the test

Part of a complete blood count (CBC) with differential; fasting is not required.

When to talk to a doctor

Discuss a persistently raised monocyte count with a doctor, interpreted with your whole CBC.

Related markers

Sources

  • MedlinePlus (NIH)
  • Testing.com (AACC)

Content reviewed on June 26, 2026

Medical disclaimer

This content is for educational purposes only. It is not medical advice and does not diagnose, treat, or prevent any condition. Reference ranges vary between laboratories — always use the range printed on your report and discuss your results with a healthcare professional.

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