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Campylobacter jejuni IgG Antibody, Serum

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

This test measures the level of IgG antibodies in your blood against *Campylobacter jejuni*, a bacteria commonly linked to gastrointestinal infections.

Quick summary

["It helps assess past exposure to this bacteria, often after symptoms like diarrhea, fever, or stomach cramps."]

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

Key facts at a glance

LOINC
82875-6
Short code
C jejuni IgA Titr Ser
Synonyms
C jejuni IgA 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
CPT
82784
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’ve had symptoms of a bacterial infection, particularly after traveling to areas with poor sanitation, consuming contaminated food/water, or if you’ve been exposed to someone with a *Campylobacter* infection. It can also be used to confirm a diagnosis when other tests are inconclusive.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, typically drawn from a vein in your arm. The test is usually done in a lab setting and results are ready within a few days.

What the Results Mean

Positive results indicate your immune system has detected *Campylobacter jejuni* antibodies, suggesting past infection. Negative results mean no detectable antibodies were found at this time. Interpretation depends on clinical context, such as your symptoms and exposure history.

Common Causes of Positive Results

Positive results are most common after recovering from a *Campylobacter* infection, which can cause severe diarrhea, vomiting, or abdominal pain. It may also appear after indirect exposure (e.g., handling contaminated food).

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

IgG Antibody to *Campylobacter jejuni* (Serum)

Frequently asked questions

Is it normal to have this test done if I don’t have symptoms?
Yes, your doctor may order this test even if you’re asymptomatic to investigate potential exposure, monitor chronic conditions linked to *Campylobacter*, or evaluate travel-related risks.
Can this test be used to diagnose an active infection?
No, this test detects past exposure through antibodies. For diagnosing an active infection, your doctor may use stool cultures or other diagnostic tools.
How long do IgG antibodies last after infection?
IgG antibodies typically remain in your system for months to years after infection, but their levels may gradually decline over time.
  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