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Tracheal Secretions, Alpha-1 Antitrypsin Mass Concentration

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

This test measures the amount of Alpha-1 Antitrypsin, a protein that helps protect your lungs from damage caused by enzymes released during inflammation. It may be used to assess lung function in individuals with genetic conditions affecting this protein.

Quick summary

["Alpha-1 Antitrypsin levels in your respiratory secretions can help diagnose or monitor lung diseases linked to low A1AT levels."]

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

Key facts at a glance

LOINC
15486-4
Short code
M gallisep rRNA Nose/Trachea Ql Probe
Synonyms
M gallisep rRNA Nose/Trachea Ql Probe
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe
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 of lung disease, such as chronic cough, shortness of breath, or recurrent lung infections. It could also be part of a screening or monitoring plan for conditions like Alpha-1 Antitrypsin Deficiency, which can lead to emphysema or chronic bronchitis.

What to Expect Before the Test

You’ll likely be asked to perform a **bronchoscopy**—a procedure where a thin tube with a camera is inserted through your nose or mouth into your airways. A small amount of your tracheal secretions (mucus from your windpipe) will be collected for testing. This is generally done under sedation or local anesthesia to keep you comfortable. Follow any specific preparation instructions your provider gives you, such as avoiding certain medications or fasting.

What the Test Results Mean

Lower than expected levels of Alpha-1 Antitrypsin in your tracheal secretions may indicate a genetic deficiency that increases your risk for lung diseases. Higher levels might be seen in certain inflammatory lung conditions, but this test is more commonly used to confirm or assess Alpha-1 Antitrypsin Deficiency. Your healthcare provider will discuss the results in the context of your medical history and symptoms.

Common Conditions Monitored or Diagnosed

This test is primarily used to diagnose or monitor Alpha-1 Antitrypsin Deficiency, a genetic disorder where the body produces insufficient Alpha-1 Antitrypsin. This deficiency can lead to lung diseases like emphysema or chronic obstructive pulmonary disease (COPD). It may also be used in research or specialized clinical settings for other respiratory conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Alpha-1 Antitrypsin Deficiency and Lung Health

Short name

Alpha-1 Antitrypsin (A1AT) in Tracheal Secretions

Frequently asked questions

How often will I need this test?
The frequency depends on your medical needs. If you have a confirmed diagnosis of Alpha-1 Antitrypsin Deficiency, your provider may recommend regular monitoring to track lung function or adjust treatment. If this is part of a screening process, follow-up may be less frequent unless symptoms change.
What are the risks or side effects of this procedure?
Bronchoscopy is generally safe, but possible risks include mild discomfort, sore throat, or infection. Rarely, there may be complications like bleeding or a reaction to sedation. Your provider will explain the risks specific to your situation and ensure you’re prepared for any post-procedure care.
Can I still smoke or avoid certain activities after the test?
If this test is related to monitoring lung health, it’s important to avoid smoking or exposure to secondhand smoke, as it can worsen lung conditions. Follow your provider’s advice on activity levels, especially if you’re undergoing treatment for Alpha-1 Antitrypsin Deficiency or related lung diseases. Always discuss any lifestyle changes with your healthcare team.
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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