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Monocyte and Macrophage Count in Bronchoalveolar Lavage Fluid

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

This test measures the number of immune cells called monocytes and macrophages found in fluid collected from your lungs via a bronchoscopy. These cells help fight infections and inflammation.

Quick summary

["Assessing lung immune response through cell counts in lung fluid."]

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

Key facts at a glance

LOINC
32806-2
Short code
Monos+Macros NFr Bronch Manual
Synonyms
Monos+Macros NFr Bronch Manual
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
manual-count
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 Is Done

Your doctor may order this test if you have symptoms like persistent cough, shortness of breath, or chest pain that suggest lung infections, inflammation, or other lung conditions. It helps evaluate conditions like pneumonia, lung cancer, or chronic lung diseases.

How the Test Is Performed

A bronchoscopy is performed under sedation. A thin tube with a camera is inserted through your nose or mouth into your airways. Fluid is collected from the lungs, and the sample is analyzed for immune cell counts.

What to Expect Before the Test

You may be asked to stop taking certain medications that could affect immune cell counts, such as steroids. Follow your doctor’s instructions about fasting or avoiding certain foods/drinks before the procedure.

What to Expect During the Test

You’ll feel discomfort or pressure during the bronchoscopy but will be sedated to stay calm. The procedure usually takes about 30 minutes. You may experience mild coughing or sore throat afterward.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Bronchial Fluid Immune Cell Count

Frequently asked questions

What does an abnormal result mean?
An abnormal result could mean your lungs are fighting an infection, experiencing inflammation, or responding to a condition like cancer or autoimmune disease. Your doctor will discuss findings with you based on your symptoms and medical history.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Your doctor will contact you once they are ready for review.
Can I eat or drink before this test?
You may eat and drink normally unless instructed otherwise by your doctor. Avoid medications that could affect immune cell counts unless approved by your healthcare provider.
  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