Lactobacillus IgG Antibody (Serum/Plasma)
This test measures the level of antibodies in your blood that your immune system produces in response to certain bacteria in the genus *Lactobacillus*. These antibodies may indicate past exposure to these bacteria.
["This test helps assess immune response to specific gut bacteria."]
Key facts at a glance
- LOINC
- 27901-8
- Short code
- Lactobacillus IgM Ser-aCnc
- Synonyms
- Lactobacillus IgM 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
- 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
What Does This Test Measure?
The test detects IgG antibodies against *Lactobacillus*, a group of bacteria commonly found in the gut. IgG antibodies are a type of immune protein your body makes in response to exposure to these bacteria, either through diet, gut microbiome changes, or other factors. This test is often used to evaluate immune reactions or to investigate potential links between gut bacteria and health conditions.
Why Might You Need This Test?
Your healthcare provider may order this test if you have symptoms or conditions that could be related to changes in gut bacteria, such as persistent digestive issues, autoimmune disorders, or unexplained immune responses. It may also be part of research or specialized diagnostic workups.
What Does a Result Mean?
Results are not typically interpreted alone but in the context of your overall health, symptoms, and medical history. Elevated levels might suggest past exposure or immune activity, while lower levels could indicate reduced immune response to these bacteria. Always discuss results with your doctor.
How Is This Test Performed?
A blood sample is drawn from a vein in your arm. The blood is then sent to a lab for analysis using an immunoassay method to detect IgG antibodies against *Lactobacillus*. This process usually takes a few days to complete.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: This test is primarily used to investigate immune responses related to gut bacteria, potentially aiding in diagnosing or monitoring conditions linked to microbiome changes. It may also be part of research studies or specialized diagnostic protocols, but it is not a standard screening test for most health conditions.
Short name
IgG Antibody to Lactobacillus
Frequently asked questions
What are the typical reasons for ordering this test?
How long does it take to get results?
Can diet or medications 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