Macrophage Count in Bronchial Fluid
This test measures the number of macrophages present in your sputum sample, which may help assess lung inflammation or infection.
["Macrophages in sputum can signal inflammation or infection in your airways."]
Key facts at a glance
- LOINC
- 30425-3
- Short code
- Macrophages NFr Bronch
- Synonyms
- Macrophages NFr Bronch
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like persistent cough, chest discomfort, or suspected lung conditions such as bronchitis, pneumonia, or chronic obstructive pulmonary disease (COPD). It can also be used to monitor lung health in certain chronic illnesses.
What to Expect Before the Test
You’ll likely cough into a sterile container to collect sputum. If you have difficulty producing sputum, your provider may guide you through techniques to clear your airways. Avoid smoking or using respiratory irritants before the test.
What the Test Results Mean
Higher-than-normal macrophage counts may indicate inflammation, infection, or other lung conditions. Lower-than-expected counts could suggest a lack of immune response in the airways. Results are interpreted by your healthcare provider in the context of your symptoms and medical history.
Common Conditions Monitored
This test is often used to diagnose or monitor conditions like chronic bronchitis, cystic fibrosis, or other inflammatory lung diseases. It may also help evaluate responses to treatments for lung infections or chronic respiratory conditions.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Macrophage Count in Sputum
Frequently asked questions
What does a high macrophage count in sputum mean?
Can this test replace a chest X-ray or CT scan?
How soon will I get my results?
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