LabInformationLab tests, explained

Comprehensive 20 Food Allergy Test Panel in California

This page explains the comprehensive 20 food allergy test panel, what it measures, and how to arrange it. The Comprehensive 20 Food Allergy Test Panel is a blood test that checks for allergic antibodies to 20 common foods. It is usually ordered when a person has symptoms after eating, such as hives, stomach upset, or swelling, and a food allergy is being considered. Across California, part of Pacific, the comprehensive 20 food allergy test panel can be ordered directly and collected at a certified site — no referral required.

Sample type
blood
Category
Allergy
Turnaround
1-3 business days
Price
$259
Referral
Not required

The Comprehensive 20 Food Allergy Test Panel is a blood test that checks for allergic antibodies to 20 common foods. It is usually ordered when a person has symptoms after eating, such as hives, stomach upset, or swelling, and a food allergy is being considered.

What it measures

  • Food-specific IgE antibodies — Antibodies the immune system makes against a particular food.
  • Milk and egg proteins — Common triggers in children and adults.
  • Peanut and tree nut proteins — Frequently tested because reactions can be severe.
  • Wheat and soy proteins — Grains and legumes linked to some reactions.
  • Fish and shellfish proteins — Seafood allergens that can cause strong reactions.
  • Other foods in the panel — May include sesame, corn, and certain fruits.

Who it is for

A doctor or allergist typically orders this panel after reviewing symptoms and diet history. It is not a routine screening test for people without symptoms.

Preparation

No fasting is needed. Tell the lab about any antihistamines or other medicines you take, because some can affect results.

Results and what they mean

Results list the level of antibody for each food, often as a number or class. A high level does not always mean a true allergy, and a low level does not always rule one out. A clinician interprets results alongside your history; this is general information, not medical advice.

Requesting the Comprehensive 20 Food Allergy Test Panel in California

Order online, choose a certified collection site in California, and review results through a secure portal. No referral is required, and orders are processed confidentially. With coastal metros, inland towns, and rural counties with very different access to testing, it pays to schedule your collection in advance.

Frequently asked questions

Does this test diagnose a food allergy?

No. It shows sensitization, which a clinician must interpret with your symptoms and history.

Do I need to stop eating before the test?

No fasting is required. Keep your normal diet unless your clinician says otherwise.

Can medicines affect the results?

Some antihistamines and other drugs may, so tell the lab and your clinician what you take.

How soon will I get results?

Most results are ready in 1 to 3 business days.

Comprehensive 20 Food Allergy Test Panel by city in California

All testing in California →   Full Comprehensive 20 Food Allergy Test Panel guide →