Serum Soybean Nitrogen Equivalent (SoyNEG) – a measure of soybean-derived proteins in serum
This test evaluates the presence of soybean-derived proteins in your blood, often used in research or specialized dietary studies involving soy exposure.
["This test helps assess how soy proteins may affect your blood chemistry over time."]
Key facts at a glance
- LOINC
- 103079-0
- Short code
- Soybean (nGly m) 6 IgE RAST
- Synonyms
- Soybean (nGly m) 6 IgE RAST
- Category
- glucose
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 10
- Ref high
- 40
- Critical range
- — – 500 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- rast
- CPT
- 84484
- SNOMED
- 302774002
- 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 Is SoyNEG Testing For?
SoyNEG measures the concentration of proteins derived from soybeans in your serum. This can be useful in studies tracking soy intake, allergic responses, or metabolic effects of soy consumption. It’s not a standard diagnostic test for medical conditions but may be part of specialized research protocols.
How Is This Test Performed?
A blood sample is drawn from a vein, typically in your arm. The serum portion is then analyzed to determine the level of soybean-derived proteins using a specialized laboratory method.
Why Might You Need This Test?
This test may be ordered as part of a clinical trial, research study, or specialized dietary assessment where soy protein exposure is being monitored. It’s not routinely recommended for general health screening.
What Does a Result Mean?
Results are qualitative (present/absent) or quantitative (measured concentration) and interpreted in the context of the study or clinical protocol. Elevated levels may indicate recent soy exposure, while low or absent levels suggest minimal or no soy protein presence.
Reference range
Adult: 10-40 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: SoyNEG is primarily used in research settings to quantify soy protein intake or metabolic responses. It may not have direct clinical implications for general health but could inform dietary recommendations in specific studies.
Short name
SoyNEG
Frequently asked questions
Why would my doctor order this test?
What should I expect during or after the test?
Can I eat or drink anything before 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 17, 2026. · Read our editorial policy