Tracheal Secretions, Alpha-1 Antitrypsin Mass Concentration
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.
["Alpha-1 Antitrypsin levels in your respiratory secretions can help diagnose or monitor lung diseases linked to low A1AT levels."]
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?
What are the risks or side effects of this procedure?
Can I still smoke or avoid certain activities after the 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