Monocyte Count (Qualitative or Semi-Quantitative Analysis)
This test evaluates the presence and relative levels of monocytes, a type of white blood cell involved in immune response and inflammation. Results may be qualitative (yes/no) or semi-quantitative (approximate levels).
["Monocytes help your body fight infections and regulate inflammation—this test checks their role in your immune system."]
Key facts at a glance
- LOINC
- 17286-6
- Short code
- Monocytes NFr Snv Manual
- Synonyms
- Monocytes NFr Snv Manual
- Category
- chemistry
- Sample
- fluid
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- manual-count
- Specimen volume
- 2-5 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h
- Hemolysis max
- 300
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Doctors may order this test to assess immune function, monitor chronic conditions like inflammatory diseases, or evaluate symptoms such as persistent fever, fatigue, or unexplained infections. It can also help diagnose or monitor certain blood disorders.
What to Expect Before the Test
No special preparation is needed. If drawn from blood, you may have a small needle inserted into your arm. If drawn from another specimen (like serum/plasma), it may be collected in a tube. Avoid strenuous activity before testing if instructed.
How the Test Works
Monocytes are counted either through qualitative methods (e.g., visual inspection) or semi-quantitative techniques (e.g., automated blood cell counters). These methods detect and estimate monocyte presence, though exact numbers may not be provided.
Possible Results and Their Meanings
Results may indicate normal, elevated, or low monocyte levels. Elevated monocytes can signal chronic inflammation, infections, or certain cancers. Low levels may suggest immune suppression or other underlying conditions. Always discuss results with your healthcare provider.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Monocyte counts are critical for diagnosing and managing conditions like chronic inflammatory diseases (e.g., rheumatoid arthritis), infections (e.g., tuberculosis), or blood disorders (e.g., leukemia). Abnormal levels can guide treatment decisions, such as adjusting medications or identifying new health risks.
Short name
Monocyte Screening/Confirmation
Frequently asked questions
What does a high monocyte count mean?
What does a low monocyte count mean?
Is fasting required for this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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