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Serum or Plasma Immunoassay for Ragweed-Specific Immunoglobulin E (IgE) Antibody

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

This test measures your body’s immune response to ragweed pollen by detecting antibodies called Immunoglobulin E (IgE) specific to ragweed. It helps identify if you may have an allergic reaction to ragweed.

Quick summary

["Assesses potential ragweed allergy risk through IgE antibody detection."]

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

Key facts at a glance

LOINC
7652-1
Short code
Common Ragweed BasoBnd Ab Qn
Synonyms
Common Ragweed BasoBnd Ab Qn
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
lhr
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your doctor may recommend this test if you experience symptoms like sneezing, itching, or a runny nose after exposure to ragweed pollen, especially during late summer or early fall. It can also be used to confirm a suspected allergy before planning treatment or exposure avoidance strategies.

What to Expect During the Test

A small blood sample is drawn from a vein in your arm. The blood is then processed to measure the ragweed-specific IgE antibodies in your serum or plasma. This is typically done using an immunoassay method.

Sample Collection and Preparation

The test uses a blood sample, which is sent to a lab for analysis. No special preparation is needed, but you may be asked to avoid certain medications that could affect results if directed by your doctor.

What the Results Mean

Results are qualitative (positive or negative) and indicate whether your body has produced ragweed-specific IgE antibodies. A positive result suggests a possible allergy, but it does not confirm a diagnosis. Further testing or allergy evaluation may be needed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Ragweed IgE

Frequently asked questions

What Does a Positive Result Indicate?
A positive result means your immune system has detected ragweed-specific IgE antibodies, which may indicate an allergic reaction to ragweed pollen. This can help guide treatment options, such as allergy medications or immunotherapy (allergy shots).
What If My Results Are Negative?
A negative result means your body did not detect ragweed-specific IgE antibodies in this sample. However, allergies can develop over time, so monitoring symptoms and retesting may be recommended if you suspect ongoing exposure or symptoms.
How Often Should I Get Tested?
Testing frequency depends on your symptoms and medical history. Your doctor may recommend retesting if symptoms persist or change, or if you suspect new exposure to ragweed. Follow-up may also be needed if you are considering allergy immunotherapy.
  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