Rape Weed Allergy (IgE)
IgE antibodies to rape weed pollen, measured from one blood draw.
- 2,000+ lab locations. Find one near you
- Nothing due at the lab. FSA / HSA accepted
- Ordered by a licensed clinician
At a glance
- Collection
- Blood drawA standard blood draw at the lab.
- Preparation
- NoneNothing to do ahead of time. Water is fine.
- Results
- 3 to 5 daysTypical turnaround after your visit.
- Where
- 2,000+ lab locationsNationwide, with nothing due at the lab.
About this test
This blood test checks for IgE sensitization to rape weed pollen, a spring to summer weed pollen. It is a pollen test, not a test for rapeseed as a food. Sensitization is not the same as allergy, so the result is read with your history. There is nothing to do ahead of your visit.
For adults 18 and older. Test availability varies by lab location.
Who should take this test?
Adults often use it when hay fever tracks with the spring to summer season, or before an allergist visit, to see whether they are sensitized to rape weed pollen.
Ask about this test
Not sure this is the right test?
AI-generated. For information only, not medical advice. Call 911 for an emergency.
What does this test measure?
The result shows whether you have IgE to rape weed pollen. With the timing of your symptoms, it can help a healthcare provider see whether this pollen may play a part.
- Rape weed pollen-specific IgE (w203)
- This marker measures IgE antibodies to rape weed pollen, a spring to summer weed pollen. A level above the lab’s reference range shows the immune system is sensitized to it. Many sensitized people have no symptoms, so the result is read with your history.
- Why it’s measured: Helps a healthcare provider see whether rape weed pollen may play a part in seasonal symptoms.
How it works
- Step 1
Order online
Check out here. A licensed clinician in your state reviews your order and sends it to the lab.
- Step 2
Visit a lab
Bring a photo ID to any of 2,000+ lab locations. No fasting needed, and nothing is due at the lab.
- Step 3
Get your results
Results post to your account, usually in 3 to 5 days, each number next to the lab’s reference range.
Find a lab near you
Choose from 2,000+ lab locations nationwide. Your order works at any of them.
What your results tell you
Results come back as an IgE level in kU/L, compared with the lab’s reference range. Above the range shows sensitization, not necessarily allergy.
- Your number next to the lab’s reference range
- Explained in plain language
- A licensed clinician reviews your order and, if appropriate, orders the test.
- A lab report you can download and share
Decisions about care for seasonal symptoms belong with an allergist or other healthcare provider who reads this with your history.
Clinical-grade testing, from the comfort of home.
From the lab to your report, every step of our process meets the gold standard in medical testing.
CLIA-certified labs
Every lab we partner with is certified under the Clinical Laboratory Improvement Amendments, meeting both state and federal standards with regular independent inspections.
We protect your health data
We protect your health data with encryption and do not sell it. Some results must be reported to public health authorities by law. See our Privacy Notice.
Rigorous quality assurance
All partner labs run regular internal quality checks, participate in proficiency testing, and comply with federal and state lab regulations.
Clinician-reviewed reports
Results are reviewed by an independent, licensed clinician.
Related tests
- In person
Dandelion Allergy (IgE)
Dandelion pollen, another spring to summer weed pollen.
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Questions
Common questions.
Anything else, our care team answers by phone, text, or email.
It does not tell you whether you will react to rape weed pollen, or how strongly. IgE shows sensitization, and many sensitized people have no symptoms. A negative result does not clear an allergy either.
Decisions about pollen exposure or care belong with an allergist or other healthcare provider who knows your history.
No. This test measures IgE to rape weed pollen, which is usually checked for seasonal symptoms. Rapeseed as a food has its own test, so this result does not tell you whether you will react to eating rapeseed.
Decisions about eating any food belong with an allergist, who reads pollen and food results together with your history.
Rape weed pollen is a spring to summer weed pollen. Rape weed is grown as a field crop. Pollen seasons can shift with weather and location, so timing varies from year to year.
When your symptoms happen is one clue an allergist or other healthcare provider uses alongside a result like this. A positive result shows sensitization, not that this pollen is the cause of your symptoms.
Both look for IgE sensitization. A skin test checks how your skin responds to a small amount of an allergen, while this test measures IgE to rape weed pollen in a blood sample. In many cases the two are considered comparable.
A blood test may be preferred in some situations, such as a widespread skin condition or recent use of medicines that affect skin tests. Don’t stop or change any medicine without talking with your healthcare provider.
Lab tests are informational and don’t diagnose conditions on their own. Available to adults 18 and older; test availability varies by lab location. A licensed clinician reviews your order and, if appropriate, orders the test. All testing is performed at CLIA-certified laboratories. Not for emergencies: if you think you may be having a medical emergency, call 911.