Amylaseigerast
This blood test checks whether your immune system has allergic antibodies (IgE) against amylase, an enzyme found in saliva, pancreatic secretions, and some baking products.
{"A simple blood test that detects allergic antibodies to amylase","Helps diagnose amylase allergy, which may cause reactions to certain foods or baker's asthma","No food restrictions needed before this test","Results are reported as positive or negative for amylase-specific IgE"}
Key facts at a glance
- LOINC
- 103009-7
- Short code
- Amylase IgE RAST
- Synonyms
- Amylase IgE RAST
- Category
- chemistry
- 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 this test?
The Amylase IgE test is a blood test that looks for specific allergic antibodies called immunoglobulin E (IgE) in your blood. These antibodies are produced by your immune system when it reacts to amylase, a digestive enzyme found naturally in your saliva and pancreas, and also used in commercial baking.
How is the test done?
A healthcare professional will draw a small blood sample from a vein in your arm. The sample is then sent to a laboratory where it is tested using a method called Radioallergosorbent Test (RAST). This test can detect whether IgE antibodies specific to amylase are present in your blood.
Do I need to prepare for the test?
No special preparation is needed. You do not need to fast before this test. You can continue taking your regular medications unless your doctor instructs otherwise. Unlike skin prick tests, this blood test is not affected by antihistamines or other allergy medications.
What do the results mean?
Your results will typically be reported as either 'Positive' (indicating amylase-specific IgE antibodies were detected) or 'Negative' (no amylase-specific IgE antibodies detected). A positive result suggests you may have an allergy to amylase, but your doctor will interpret this in the context of your symptoms and medical history.
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 findings2
Frequently asked questions
What is amylase and where is it found?
What symptoms would suggest an amylase allergy?
How is this different from a skin prick test?
What should I do if my test is positive?
Can the test results change over time?
Sources
- 1
- 2
- 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