Blue Mussel Allergy Test
This page explains the blue mussel allergy test, what it measures, and how to arrange it. The blue mussel allergy test is a blood test that looks for antibodies your immune system may make against proteins found in blue mussels. It is usually ordered when someone has had symptoms after eating mussels or other shellfish, or when a clinician wants to check sensitivity before advising on avoidance.
- Sample type
- blood
- Category
- Allergy
- Turnaround
- 1-3 business days
- Price
- $49
- Referral
- Not required
The blue mussel allergy test is a blood test that looks for antibodies your immune system may make against proteins found in blue mussels. It is usually ordered when someone has had symptoms after eating mussels or other shellfish, or when a clinician wants to check sensitivity before advising on avoidance.
What it measures
- Specific IgE to blue mussel — The main marker; shows whether your blood contains antibodies that react to blue mussel proteins.
- Total IgE — A general measure of allergic antibody levels; sometimes included for context, not a diagnosis by itself.
- Cross-reactive shellfish markers — May check related shellfish proteins because reactions to one type can overlap with others.
Who it is for
It is typically ordered by a primary care clinician or an allergist for people with suspected shellfish allergy, or those who have had hives, swelling, breathing trouble, or stomach symptoms after eating mussels.
Preparation
No fasting or special preparation is usually required. Tell your clinician about any medications you take, especially antihistamines, because they can sometimes affect allergy test results.
Results and what they mean
Results are reported as a level or class for each marker, often alongside a reference range. A higher level suggests sensitivity but does not by itself confirm an allergy; a clinician interprets the result with your symptoms and history. This is general information, not medical advice.
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 blue mussel 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
Does a positive result mean I am allergic to mussels?
Not always. A positive result shows your blood has antibodies that react to mussel proteins, but only a clinician can decide whether that means a true allergy based on your symptoms.
Do I need to stop eating mussels before the test?
No. You do not need to avoid mussels before this blood test, but follow any instructions your clinician gives you.
Can I take antihistamines before the test?
Antihistamines can sometimes affect allergy testing, so ask your clinician whether to pause them and for how long.
How long until I get results?
Results are usually available in 1 to 3 business days, though timing can vary by lab.