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Serum Soybean Agglutinin (SBA) Antibody Test

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

This test measures the level of antibodies in your blood that react with soybean agglutinin, a protein found in soybeans. It may be used to assess immune responses or detect certain autoimmune conditions.

Quick summary

["This test helps evaluate immune function and potential autoimmune activity related to soy exposure."]

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

Key facts at a glance

LOINC
7137-3
Short code
Soybean BasoBnd Ab Qn
Synonyms
Soybean BasoBnd Ab Qn
Category
glucose
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
lhr
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What Does This Test Measure?

The SBA antibody test detects the presence and concentration of antibodies that bind to soybean agglutinin. These antibodies can be part of an immune response, sometimes linked to conditions like soy hypersensitivity or autoimmune diseases.

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms or conditions associated with soy sensitivity, autoimmune disorders, or if you’re investigating unexplained immune reactions.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in your arm. The blood is processed to separate serum, which is then tested for SBA antibodies. No special preparation is needed before the test.

Common Uses and Indications

This test is less commonly used than standard allergy or autoimmune tests but may be considered in cases of suspected soy-related immune reactions, chronic inflammatory conditions, or research settings.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated levels of SBA antibodies may suggest an immune response to soy, potentially indicating hypersensitivity or an autoimmune process. However, results alone do not diagnose a specific condition. They are often used alongside other tests for a full assessment.

Short name

SBA Antibody

Frequently asked questions

What Are Normal Results?
There are no widely established reference ranges for SBA antibodies because this test is not standard in clinical practice. Results are interpreted in the context of your symptoms, medical history, and other test findings.
How Do I Prepare for This Test?
No special preparation is required. You may eat and drink normally on the day of your test, but avoid heavy meals that could make you feel dizzy during the blood draw.
What Are Possible Side Effects?
Most people experience mild discomfort or bruising at the injection site. Rarely, some may feel lightheadedness or fainting due to the blood draw, so it’s best to sit or lie down during the procedure.
  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