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Soybean agglutination reaction (qualitative) for serum/plasma

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

This test checks for the presence of certain antibodies in your blood that may react with soybean particles, often used as a screening tool for immune system or autoimmune conditions.

Quick summary

["A simple blood test to evaluate potential immune or inflammatory responses."]

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

Key facts at a glance

LOINC
48217-4
Short code
Soybean LR-mCnc
Synonyms
Soybean LR-mCnc
Category
glucose
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

What This Test Measures

The soybean agglutination reaction detects if your blood contains antibodies that bind to soybean particles, forming visible clumps (agglutination). This can help identify immune system activity or potential autoimmune responses.

Why It’s Ordered

Doctors may use this test as part of a broader evaluation for conditions like lupus, rheumatoid arthritis, or other autoimmune diseases where antibody activity is suspected.

How It’s Performed

A blood sample is drawn, and soybean particles are added to the serum or plasma. If agglutination occurs, it indicates positive antibody presence.

What the Results Mean

A positive result suggests potential immune activity, but further testing is needed to determine the exact cause. A negative result means no visible clumping was observed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test is primarily used as a screening tool to detect nonspecific immune responses. While it may flag potential autoimmune activity, it is not specific to any single condition. Results should be interpreted alongside clinical findings and other diagnostic tests for accurate diagnosis.

Short name

Soybean Agglutination Test (SAT) - Qualitative

Frequently asked questions

What does a positive result mean?
A positive result indicates that your blood contains antibodies that react with soybean particles, which may suggest an immune response. This could be part of an autoimmune condition or another underlying issue, but further testing is needed to clarify.
Can this test be used to diagnose autoimmune diseases?
No, this test is not diagnostic on its own. It is often used as a screening tool and requires additional tests to confirm or rule out specific autoimmune diseases.
How long does it take to get results?
Results are typically available within a few hours to a couple of days, depending on the lab processing 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