Test library
Pigweed Pollen Allergy Test
This blood test measures IgE antibodies to common pigweed pollen, a weed allergen that can cause seasonal sneezing, runny nose, and itchy eyes.
Order Pigweed Allergy Symptoms and Testing
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Pigweed Allergy Symptoms and Testing- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
The common pigweed allergy test measures immunoglobulin E antibodies against pigweed pollen in a blood sample. Pigweed is a widespread weed that releases airborne pollen and can contribute to seasonal allergy symptoms. The test is intended for people with recurring seasonal symptoms who want to identify their specific triggers. A healthcare provider interprets the result with your symptom calendar.
What this test measures
This test detects allergen-specific immunoglobulin E against common pigweed, also known as Amaranthus. Pigweed grows in fields, gardens, and disturbed ground, and its light pollen travels easily through the air during its pollination season. Sensitized people may experience sneezing, nasal congestion, runny nose, and itchy or watery eyes. The immunoassay reports a quantitative antibody level and an IgE class for pigweed.
A blood sample is collected by venipuncture at a partner laboratory and analyzed with an immunoassay. Results are reported in kilounits per liter, and total IgE or eosinophil counts may be included as supporting context. Weed pollens sometimes share proteins, so a panel that tests several weeds can help show whether reactivity is specific to pigweed or part of a broader weed sensitivity.
People order this test when seasonal symptoms suggest a weed pollen allergy but the source is unclear. Identifying the trigger helps with timing of avoidance measures and supports a discussion with a clinician about management options. The test shows sensitization rather than symptom severity, so it should be reviewed alongside your seasonal pattern and other findings.
- Common pigweed-specific IgE antibodies
- Quantitative sIgE concentration reported in kU/L
- Allergen-specific IgE class on the zero to six scale
- Total serum IgE
- Blood eosinophil count
- Related weed pollen IgE markers when a panel is included
Why people order this test
- Identify a weed pollen trigger for seasonal symptoms
- Separate pigweed sensitization from grass or tree pollen allergy
- Support avoidance planning during weed pollen season
- Provide objective data for an allergy management discussion
- Evaluate persistent summer or fall allergy symptoms
How to prepare
No fasting is required for this allergy blood test, and a single blood draw is typical. Follow any instructions provided by the laboratory and inform the collector about medications or recent allergic reactions.
Understanding your results
Results are usually available within one to three business days. A detected antibody response indicates sensitization to pigweed pollen rather than a confirmed diagnosis. A healthcare provider should interpret the finding with your seasonal symptoms and any other allergy results.
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Connecticut
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Pigweed Pollen Allergy Test across Florida.
Georgia
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Idaho
Pigweed Pollen Allergy Test across Idaho.
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Frequently Asked Questions
What is common pigweed?
It is a widespread weed in the amaranth family that grows in fields and disturbed soil and releases airborne pollen.
When does pigweed cause allergy symptoms?
Pigweed pollinates during the warmer months, with timing that varies by region, so symptoms follow the local pollen season.
Do I need to fast?
No. Fasting is not required for allergy blood testing unless the lab instructs otherwise.
Can pigweed allergy be confused with other pollen allergies?
Yes. Weed, grass, and tree pollen allergies can produce similar symptoms, which is why specific testing can be useful.
Is there treatment for pollen allergy?
Several management options exist. A qualified healthcare provider can discuss what may be appropriate for your symptoms.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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Every page on this site is reviewed for clarity, sourcing, and accuracy. We update our library as testing options, collection networks, and accreditation standards change.