Goat Milk-Specific IgE, Serum — Radioallergosorbent Test (RAST), Qualitative
A qualitative blood test that detects IgE antibodies directed against goat milk proteins, which may indicate sensitization or a possible milk allergy.
["A positive result shows goat milk-specific IgE antibodies and may support evaluation for a possible goat milk allergy."]
Key facts at a glance
- LOINC
- 15732-1
- Short code
- Deprecated Goat Milk IgE RAST Ql
- Synonyms
- Deprecated Goat Milk IgE RAST Ql
- Category
- liver
- 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
- 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 this test?
This test looks for IgE antibodies that react with proteins from goat milk. It is commonly known as a goat milk-specific IgE or RAST test. A positive result indicates immune sensitization but must be interpreted alongside symptoms and medical history.
Why might I need this test?
A clinician may order this test when a person has symptoms such as hives, swelling, wheezing, vomiting, or digestive discomfort after eating goat milk or goat milk products. It may also be used when other tests have not clearly established the cause of a suspected food allergy.
How is the test performed?
A blood sample is collected and tested for antibodies against goat milk proteins. The result is reported as positive or negative, although some laboratories may also provide a reaction level to help interpret the likelihood of an allergy.
How do I prepare for the test?
No special preparation is usually required for this blood test. Tell your clinician about any recent allergic reactions, current symptoms, medicines, and whether you avoid goat milk or dairy products.
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.
◆Associated findings1
Short name
Goat Milk-Specific IgE
Frequently asked questions
Does a positive result confirm a goat milk allergy?
Is goat milk allergy the same as cow's milk allergy?
Can this test be used to decide whether to avoid goat milk?
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