IgE Antibody to Common Ragweed (Serum)
This test measures the level of Immunoglobulin E (IgE) antibodies specific to common ragweed pollen in your blood. IgE is part of your immune response and can rise if your body reacts to ragweed allergens.
["Assesses allergy sensitivity to common ragweed pollen through IgE antibody detection."]
Key facts at a glance
- LOINC
- 65782-5
- Short code
- Common ragweed (nAmb a) 1 IgE Qn
- Synonyms
- Common ragweed (nAmb a) 1 IgE Qn
- Category
- chemistry
- 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 Does This Test Measure?
IgE antibodies are a type of protein your immune system produces in response to allergens like ragweed pollen. High levels may indicate an allergic reaction to ragweed, though they don’t always mean you’ll have symptoms. This test helps doctors determine if ragweed is a trigger for your allergies.
Why Might You Need This Test?
Your healthcare provider may recommend this test if you suspect ragweed pollen is causing symptoms like sneezing, itching, or respiratory issues. It’s often used alongside other allergy tests to guide treatment plans, such as avoiding exposure or using allergy medications.
How Is the Test Performed?
A small blood sample is drawn from your arm. The sample is sent to a lab where it’s analyzed to detect IgE antibodies specific to ragweed. Results are typically available within a few days.
What Do the Results Mean?
Results are qualitative (positive or negative) rather than numeric. A positive result suggests your body has produced IgE antibodies to ragweed, which may mean you’re allergic. However, having antibodies doesn’t always mean you’ll react to ragweed in daily life.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
High IgE levels to ragweed can confirm an allergic reaction to the pollen. This test helps doctors identify potential allergens to avoid or manage symptoms effectively. It’s particularly useful for diagnosing ragweed-related allergies that may cause seasonal symptoms like hay fever or asthma.
Short name
Ragweed IgE
Frequently asked questions
What does a positive result mean?
Can I still be allergic to ragweed even if my IgE test is negative?
How long does it take to get results?
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 16, 2026. · Read our editorial policy