What is the difference between a food allergy and a food intolerance?

A food allergy triggers an IgE immune response — your immune system produces antibodies against a specific food protein. Symptoms can be immediate and potentially life-threatening including hives, swelling, and anaphylaxis. A food intolerance like lactose intolerance is a digestive issue — not an immune response — and is not detectable by an IgE blood test.

Which food allergy test should I start with?

For broad screening across multiple common allergens, start with the Food Allergen Profile (Basic) which covers milk, egg, wheat, soy, and codfish. For more specific concerns, order a targeted panel — Nuts, Shellfish, Fish, or Grains — based on your suspected trigger.

What is the difference between wheat allergy and celiac disease?

Wheat allergy is an IgE-mediated immune response to wheat protein — detectable by a food allergy blood test. Celiac disease is an autoimmune condition where gluten triggers damage to the small intestine — diagnosed by a separate Celiac Disease Profile blood test that measures different antibodies. Both can cause digestive symptoms but require different tests and different management.

Can I order food allergy tests without a doctor?

Yes. Personalabs provides the physician-signed lab order as part of your purchase. Order online, visit any Labcorp patient service center near you, and get results in your secure account within 24 to 48 hours. No referral, no insurance, no doctor visit required.

Food Allergy Blood Tests | Food Sensitivity Tests

Food Allergy Tests

Over 32 million Americans live with food allergies — and reactions can range from mild discomfort to life-threatening anaphylaxis. The only way to know exactly which foods your immune system is reacting to is through a clinical IgE blood test. Personalabs gives you direct access to the same food allergy panels your doctor orders — without the office visit, referral, or insurance approval. Order online, visit any of 4,000+ Labcorp locations nationwide, and get physician-reviewed results in days.