Mustard Allergy Test
This page explains the mustard allergy test, what it measures, and how to arrange it. A mustard allergy test checks your blood for antibodies that may indicate an allergy to mustard and foods containing it. It is usually ordered when you have had allergic symptoms after eating mustard or products that may contain it, such as some dressings, sauces, or spice blends.
- Sample type
- blood
- Category
- Allergy
- Turnaround
- 1-3 business days
- Price
- $49
- Referral
- Not required
A mustard allergy test checks your blood for antibodies that may indicate an allergy to mustard and foods containing it. It is usually ordered when you have had allergic symptoms after eating mustard or products that may contain it, such as some dressings, sauces, or spice blends.
What it measures
- Mustard-specific IgE — The main marker: an antibody that can be linked to allergic reactions to mustard.
- Total IgE — A general measure of allergic antibody levels; it does not diagnose mustard allergy by itself.
- Other specific IgE (if tested) — Sometimes other foods are checked at the same time to help find the cause of symptoms.
Who it is for
This test is usually ordered by an allergist, primary care clinician, or another specialist when a mustard allergy is suspected based on symptoms or a food diary.
Preparation
No fasting or special preparation is required. Tell your clinician about any medicines you take, because some can affect allergy testing.
Results and what they mean
Results are reported as a level or class for mustard-specific IgE, along with a reference range from the lab. A clinician interprets the result with your symptoms and history; a single number cannot confirm or rule out an allergy. 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 mustard 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 definitely allergic?
No. A positive result may show sensitivity, but only a clinician can decide whether it means a true allergy.
Can this test tell me how severe a reaction will be?
No. It does not predict how severe a future reaction might be.
Do I need to avoid mustard before the test?
No. You do not need to avoid mustard before a blood test.
How long until I get results?
Most results are ready in 1 to 3 business days, though times can vary by lab.