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Weed Allergy Screening Panel (Serum Immunoassay)

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

This test measures antibodies to common weed plant allergens, helping identify potential sensitivities to plants like ragweed, pigweed, or ambrosia.

Quick summary

["A simple blood test to check for possible weed plant allergies."]

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

Key facts at a glance

LOINC
61202-8
Short code
Weed Allerg Mix1 IgE/IgE total %
Synonyms
Weed Allerg Mix1 IgE/IgE total %
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
multidisk
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 panel detects specific immunoglobulin E (IgE) antibodies against key allergens found in common weeds. These allergens may trigger allergic reactions in some individuals, including sneezing, itching, or skin rashes.

How the Test Works

A small blood sample is drawn and analyzed using immunoassay methods to identify the presence of IgE antibodies against weed allergens. This helps determine if your immune system has been exposed to these plants.

Why It Might Be Ordered

Your healthcare provider may recommend this test if you experience symptoms like seasonal allergies, persistent itching, or respiratory issues that could be linked to weed pollen exposure.

Preparation for the Test

No special preparation is needed. You can eat and drink normally before the blood draw. Avoid taking antihistamines or other allergy medications 24 hours before testing, as they may affect results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Weed Allergy Screen

Frequently asked questions

What does a positive result mean?
A positive result indicates the presence of IgE antibodies to weed allergens, suggesting a possible allergic reaction. However, it does not confirm a diagnosis of allergy without clinical correlation. Further testing or allergy evaluation by a specialist may be needed.
Can this test predict future allergic reactions?
This test helps identify sensitivities but does not predict future reactions with certainty. Allergic reactions depend on multiple factors, including exposure levels and individual immune response.
What if my results are negative?
A negative result means no detectable IgE antibodies to weed allergens in this sample. However, allergies can develop over time, so ongoing monitoring or retesting may be recommended if symptoms persist.
  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