Pseudomonas aeruginosa Antibody Titer, Serum — Immunoassay
A blood test that measures antibodies to Pseudomonas aeruginosa, a bacterium that can cause lung, wound, and urinary tract infections.
["This test can help show whether your immune system has encountered Pseudomonas aeruginosa bacteria."]
Key facts at a glance
- LOINC
- 68977-8
- Short code
- P aeruginosa E Ab Titr Ser IA
- Synonyms
- P aeruginosa E Ab Titr Ser IA
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ia
- 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
What is this test?
This blood test measures the level or titer of antibodies directed against Pseudomonas aeruginosa. Antibodies are proteins made by the immune system after exposure to a bacterium or after vaccination.
Why might I need this test?
The test may be used to help evaluate suspected or recurrent Pseudomonas aeruginosa infection, particularly in people with cystic fibrosis or chronic lung disease. It may also support investigation of infections in people with weakened immune systems.
How is the test performed?
A serum sample is analyzed using an immunoassay or a comparable laboratory method to detect and quantify antibodies to Pseudomonas aeruginosa. The result may be reported as a titer or antibody level, depending on the laboratory method.
How do I prepare for the test?
No special preparation is usually required. Follow your healthcare professional's instructions about timing, especially if this test is being compared with an earlier sample.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Detectable antibodies may indicate previous exposure to Pseudomonas aeruginosa and do not by themselves prove that an active infection is present. Rising antibody levels can sometimes support the diagnosis of a recent or ongoing infection, but interpretation depends on symptoms, cultures, and other clinical findings. Results require professional interpretation and should not be used alone to determine treatment.
Short name
Pseudomonas aeruginosa antibody titer
Frequently asked questions
Does a positive result mean I have a Pseudomonas aeruginosa infection?
Why is this test sometimes ordered for cystic fibrosis?
Is there anything I should do before the blood draw?
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