Crawfish Allergy Test
Crawfish Allergy Test is a laboratory test you can order directly. The crawfish allergy test is a blood test that checks for an allergic response to crawfish, a type of shellfish. It is typically ordered when someone has had symptoms like hives, swelling, or difficulty breathing after eating crawfish or other shellfish, or when a doctor needs to confirm a suspected allergy.
- Sample type
- blood
- Category
- Allergy
- Turnaround
- 1-3 business days
- Price
- $49
- Referral
- Not required
The crawfish allergy test is a blood test that checks for an allergic response to crawfish, a type of shellfish. It is typically ordered when someone has had symptoms like hives, swelling, or difficulty breathing after eating crawfish or other shellfish, or when a doctor needs to confirm a suspected allergy.
What it measures
- Crawfish-specific IgE — Antibodies that your immune system makes if you are allergic to crawfish.
- Total IgE — A general measure of allergic antibody levels, sometimes included for context.
- Other shellfish-specific IgE — May test for related shellfish like shrimp or crab to see if you react to more than one.
Who it is for
This test is usually ordered by an allergist, immunologist, or primary care doctor after a patient reports symptoms that suggest a shellfish allergy.
Preparation
No fasting or special preparation is needed for this blood test. You can eat and drink normally before your appointment.
Results and what they mean
Results are reported as a level of specific IgE, often as a number or a class (e.g., low to high). A clinician interprets these results along with your symptoms and history; a positive test alone does not always mean you have a true allergy. This information is not medical advice; discuss your results with a healthcare provider.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the crawfish allergy test is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Do I need to avoid eating crawfish before the test?
No, you do not need to avoid crawfish before the test. The test measures antibodies in your blood, not your immediate reaction to food.
How long does it take to get results?
Results are typically available within 1 to 3 business days.
Can this test tell me if I outgrew a crawfish allergy?
It can help, but a clinician will consider your history and may recommend other tests or a supervised food challenge to confirm.
Is this test covered by insurance?
Many insurance plans cover allergy blood tests when ordered by a doctor. Check with your insurance provider for details.