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Giantragweed-specific IgE antibody (serum/plasma)

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

This test measures your body’s immune response to Giantragweed pollen, a plant common in certain regions. It helps identify if you may have an allergic reaction.

Quick summary

["This test checks for allergies to Giantragweed pollen."]

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

Key facts at a glance

LOINC
56370-0
Short code
Giant Ragweed IgG4-mCnc
Synonyms
Giant Ragweed IgG4-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
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

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like sneezing, itching, or a runny nose during pollen season, or if you’ve been exposed to Giantragweed. It’s also used to confirm allergies suspected through skin tests or medical history.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from your arm. The test is quick and typically done in a lab setting.

What the Test Measures

The test detects IgE antibodies, which your immune system produces in response to allergens like Giantragweed pollen. Higher levels may indicate an allergic reaction.

How the Results Are Used

Results help determine if you’re allergic to Giantragweed. They guide treatment options, such as avoiding exposure or using allergy medications.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgE to Giantragweed

Frequently asked questions

What does a positive result mean?
A positive result indicates your immune system may produce antibodies to Giantragweed pollen. This doesn’t always mean you’ll have an allergic reaction, but it may warrant further evaluation or allergy management strategies.
Can this test be used to treat allergies?
No, this test is for diagnosis, not treatment. If allergies are confirmed, your provider may recommend allergy shots, medications, or other strategies to manage symptoms.
How often should I get this test?
Frequency depends on your symptoms and medical needs. Your provider will determine if retesting is necessary, often during or after pollen season.
  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