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Serum or Plasma Substance Concentration (Qualitative) for IgE Antibody to Ragweed Pollen

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

This test measures your immune system’s response to ragweed pollen by detecting specific antibodies (IgE) in your blood. It helps determine if you may have an allergic reaction to ragweed.

Quick summary

["This test assesses potential ragweed allergies and guides allergy treatment planning."]

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

Key facts at a glance

LOINC
7654-7
Short code
Slender Ragweed IgE Qn
Synonyms
Slender Ragweed 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 This Test Measures

The test looks for IgE antibodies, which are part of your immune system that react to allergens like ragweed pollen. These antibodies bind to your immune cells, signaling an allergic response when exposed to ragweed.

Why It’s Done

Doctors may order this test if you’ve had symptoms like sneezing, itching, or skin reactions after exposure to ragweed, or if you’ve been diagnosed with ragweed allergy. It helps confirm allergies and plan appropriate treatments.

How It’s Performed

A blood sample is taken from a vein in your arm. The sample is then analyzed to detect IgE antibodies specific to ragweed pollen using an immunoassay method.

What to Expect Before the Test

No special preparation is needed. You may have a small bandage on the site where the blood is drawn, and you’ll likely feel a brief pinch or slight discomfort.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgE Ragweed Sensitivity Test

Frequently asked questions

Why might my doctor recommend this test?
Your doctor may suggest this test if you’ve experienced allergic symptoms linked to ragweed exposure, such as seasonal allergies or skin reactions, or if you’ve been diagnosed with ragweed allergy.
What do my test results mean?
Results are qualitative (positive or negative) rather than a numeric value. A positive result suggests a likely allergic reaction to ragweed pollen, while a negative result indicates no detectable IgE antibodies to ragweed.
Can I take allergy medication before this test?
Yes, you can take prescribed allergy medications as usual, but inform your healthcare provider before the test so they can interpret results accurately.
  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