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Serum or Plasma *Antibody to Pseudomonas aeruginosa* (Qualitative)

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

This test checks for the presence of antibodies in your blood that may indicate a past or current infection with *Pseudomonas aeruginosa*, a type of bacteria commonly found in soil, water, and certain hospital environments.

Quick summary

["This test helps identify possible exposure to this bacterium, which can cause serious infections in people with weakened immune systems or chronic health conditions."]

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

Key facts at a glance

LOINC
17502-6
Short code
P aerugns Ab Ser-aCnc
Synonyms
P aerugns Ab Ser-aCnc
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 persistent lung infections, severe wounds, or other signs of infection that don’t respond to standard antibiotics. It’s also used in monitoring patients with conditions like cystic fibrosis or those who’ve had organ transplants, where Pseudomonas infections are more likely.

What to Expect Before the Test

No special preparation is needed. You’ll likely have a simple blood draw, and results will be qualitative (yes/no presence of antibodies). If further testing is needed, your provider will guide you.

What the Results Mean

A positive result means your blood contains antibodies against Pseudomonas aeruginosa, suggesting past exposure or infection. A negative result means no detectable antibodies were found at this time.

Common Conditions Monitored

This test is often used in patients with chronic lung diseases (e.g., cystic fibrosis), those with weakened immune systems, or those who’ve had recent hospital stays with potential exposure to Pseudomonas.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Pseudomonas aeruginosa Antibody Screen

Frequently asked questions

How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Your provider will contact you with the final interpretation.
Can I fast before this test?
No fasting is required for this blood test. However, if you’re scheduled for other tests, follow any specific instructions your provider gives you.
What if my results are positive?
A positive result may prompt additional testing (like cultures) or further evaluation of your symptoms. Your healthcare team will work with you to determine the next steps based on your overall health and medical history.
  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