Fluorescent Immunoassay for Anti-Trypsin Inhibitor Antibodies (Serum)
This test measures antibodies that may indicate an immune response against alpha-1 antitrypsin, a protein that helps protect your lungs and liver. It’s sometimes used to check for conditions like autoimmune diseases or certain lung disorders.
["This test helps evaluate potential immune reactions to alpha-1 antitrypsin, a protein that supports lung and liver health."]
Key facts at a glance
- LOINC
- 47456-9
- Short code
- FLUAV H7 Ab Titr Ser
- Synonyms
- FLUAV H7 Ab Titr Ser
- 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 chronic lung issues (such as emphysema), unexplained liver problems, or if you have an autoimmune condition. It can also be part of monitoring for rare blood disorders or reactions to treatments involving alpha-1 antitrypsin.
What to Expect Before the Test
No special preparation is needed. You’ll provide a blood sample, usually drawn from your arm. The test uses a small amount of serum (liquid part of blood) and is analyzed with a fluorescent immunoassay method to detect specific antibodies.
What the Results Mean
Results are qualitative (positive or negative) and indicate whether antibodies against alpha-1 antitrypsin are present. A positive result suggests an immune response, which may guide further testing or treatment decisions.
Common Reasons for Testing
This test is less commonly used than others but may be part of diagnosing or monitoring conditions like alpha-1 antitrypsin deficiency-related lung disease, autoimmune hepatitis, or certain blood disorders where immune reactions are suspected.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Antibodies against alpha-1 antitrypsin can signal an immune response that may affect lung or liver health. While rare, these reactions can be linked to conditions like autoimmune diseases or complications from certain treatments. Your provider will discuss results in the context of your symptoms and medical history to determine next steps.
Short name
Anti-alpha-1 antitrypsin antibodies
Frequently asked questions
What does a positive result mean?
How often should I get this test?
Can lifestyle changes affect 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