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Monocyte Count (Qualitative Blood Evaluation)

Published: August 9, 2026Updated: August 16, 2026

This test measures the presence and relative proportion of monocytes in your blood, a type of white blood cell that helps fight infections and inflammation. It may be used to assess immune function or identify conditions affecting white blood cell counts.

Quick summary

["Monocytes help your body fight infections and manage inflammation; this test checks their levels in your blood."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
17287-4
Short code
Monocytes NFr Ur Manual
Synonyms
Monocytes NFr Ur Manual
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
manual-count
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why Might This Test Be Done?

Your healthcare provider may order this qualitative test if you have symptoms like frequent infections, unexplained fevers, or signs of inflammation. It can also be part of a broader blood evaluation when other tests suggest abnormal white blood cell activity.

What to Expect Before the Test

No special preparation is needed. You’ll have a simple blood draw, usually from your arm, similar to other routine blood tests. The process takes a few minutes, and you can resume normal activities afterward.

What the Results Mean

Qualitative results indicate whether monocyte levels appear abnormal compared to typical ranges. High or low counts may signal conditions like infections, autoimmune diseases, or certain cancers, but further testing would be needed for diagnosis.

Common Conditions Monitored

This test may help diagnose or monitor conditions such as chronic infections, certain leukemias, or immune system disorders. It’s not a standalone diagnostic tool but supports broader clinical assessments.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Monocyte Screening

Frequently asked questions

What does a ‘positive’ or ‘abnormal’ result mean?
A ‘positive’ or abnormal result suggests monocytes may be elevated or decreased relative to expected levels, which could indicate infection, inflammation, or other health issues. Your provider will interpret results in the context of your symptoms and medical history.
How often should I get this test?
Frequency depends on your health status and symptoms. Your provider will determine how often to repeat this test, often as part of routine or ongoing monitoring for conditions like chronic infections or immune disorders.
Can I eat or drink before this test?
No dietary restrictions apply. You can eat and drink normally before the blood draw, as this test doesn’t require fasting.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy