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286 Food Antigens • 1 mL Serum

Food Sensitivity IgG Testing in Florida

Could certain foods be contributing to bloating, fatigue, headaches, or digestive discomfort? Our partner laboratory's foodANALYZER measures total IgG reactivity to 286 food antigens across 13 food categories to help guide a closer look at possible food-related patterns.

The assay uses multiplex ELISA-based Nano-Bead Technology and requires 1 mL of serum. The typical turnaround is 24 hours after the laboratory receives the sample, and the report can support personalized diet and lifestyle guidance when interpreted with your symptoms and clinical history.

Our partner laboratory is one of a limited number of U.S. laboratories offering this multiplex ELISA-based IgG Nano-Bead assay. The method is designed to reduce interference from cross-reactive carbohydrate determinants, supporting more specific antibody measurement.

Vandhana Kiswani-Barley, MD

Triple Board-Certified + FACHE · 15+ Years Experience

Family Medicine
Obesity Medicine
Pain Management
FDA-Approved Medications Only
Same Doctor Every Visit
Telehealth in FL
Transparent Pay-Per-Service Pricing
Quick Answer

How Does the Food Sensitivity Test Work?

For $310, a blood draw provides the serum our partner laboratory needs to measure total IgG reactivity to 286 food antigens using multiplex ELISA-based foodANALYZER Nano-Bead Technology.

The report does not diagnose a food allergy or prove that a reactive food causes symptoms. You can schedule an optional visit with Dr. Kiswani-Barley to review it in the context of your history and discuss whether a structured dietary approach is appropriate.

Important clinical context

Food-specific IgG can reflect exposure to foods and is not, by itself, proof of intolerance or a cause of symptoms. This test cannot diagnose or rule out an IgE-mediated food allergy. Do not use an IgG result to reintroduce a food that has caused hives, swelling, breathing difficulty, fainting, or anaphylaxis without appropriate medical guidance.

Who Is This Test For?

The Food Sensitivity Test, called foodANALYZER, is for people seeking additional insight into food-related patterns as part of a broader wellness or nutrition plan.

Unexplained Digestive Concerns

People experiencing concerns such as bloating, gas, diarrhea, or abdominal discomfort that may warrant a closer dietary review.

Fatigue or Other Recurring Symptoms

People exploring whether food-related patterns accompany fatigue, headaches, skin concerns, or other recurring symptoms.

Personalized Nutrition Goals

People who want laboratory information to discuss alongside their usual diet, symptoms, health history, and body-composition goals.

This is not the right test for immediate reactions such as hives, swelling, wheezing, or trouble breathing. Those symptoms require medical evaluation for possible IgE-mediated allergy.

Food Sensitivity vs. Food Allergy: What's the Difference?

These tests measure different antibody responses and can contribute to a clinician-led root-cause evaluation. The clinical finding comes from integrating the laboratory result with symptoms, exposure timing, diet, medical history, and any additional evaluation—not from either report alone.

Food Allergy Evaluation (IgE)

Measures IgE Sensitization

  • •Clinical reactions often begin within minutes to about 2 hours
  • •IgE antibody mediated
  • •Can be life-threatening (anaphylaxis)
  • •Symptoms: hives, swelling, difficulty breathing
  • •A positive blood result alone does not establish clinical allergy
  • •A supervised oral food challenge may be needed when the diagnosis is uncertain

Food Sensitivity (IgG)

Total IgG Reactivity

  • •Measures food-specific total IgG antibodies
  • •Does not diagnose food allergy
  • •Does not diagnose food intolerance or prove symptom causation
  • •Interpret with diet, symptoms, and medical history
  • •Can support structured dietary guidance

See What Your Results Look Like

The report displays relative total IgG reactivity across the 286 food antigens tested.

Sample Food Sensitivity Report

Download a sample report to see the food-by-food IgG reactivity categories. The report is laboratory data—not a diagnosis that a listed food causes symptoms.

  • Color-coded reactivity levels (High, Moderate, Low, None)
  • All 13 food groups with individual food breakdown
  • Typical 24-hour laboratory turnaround after sample receipt
View Sample Report

Symptoms That May Prompt Food Sensitivity Testing

These nonspecific concerns have many possible causes. Food-specific IgG results can be one part of a Thrive Rx root-cause evaluation when interpreted with diet, symptoms, timing, medical history, and other clinical findings; the IgG result alone does not show that a listed food caused them.

Digestive

  • Bloating
  • IBS
  • Diarrhea
  • Constipation
  • Nausea
  • Acid Reflux

Neurological

  • Headaches
  • Migraines
  • Brain Fog
  • Mood Concerns

Skin

  • Eczema
  • Rashes
  • Acne
  • Itching

Other

  • Fatigue
  • Joint Discomfort
  • Food-Related Concerns
  • Weight Concerns

286 Foods Tested Across 13 Food Groups

The panel measures total IgG reactivity across foods ranging from everyday staples to specialty ingredients; a reactive result does not prove that a food is a symptom trigger.

Vegetables

51

foods tested

Fish & Seafood

37

foods tested

Fruits

36

foods tested

Spices

31

foods tested

Cereals & Seeds

29

foods tested

Novel Foods

21

foods tested

Milk & Egg

17

foods tested

Meat

14

foods tested

Nuts

13

foods tested

Legumes

10

foods tested

Coffee & Tea

9

foods tested

Others

9

foods tested

Edible Mushrooms

6

foods tested

How Food Sensitivity Testing Works

From store purchase through laboratory reporting, the process provides food-specific IgG measurements for review alongside your diet, symptoms, and health history.

1

Order in the Thrive Rx Store

New and existing patients can order the test directly from the Thrive Rx store at the same price, without first booking an appointment. Existing patients may also request it through the patient portal, or Dr. Kiswani-Barley may recommend and order it through the EHR.

2

Choose Your Draw Option

Select a participating walk-in location or mobile phlebotomy at your home or office. One draw fee applies per draw: $75 walk-in or $129 mobile.

3

Complete the Blood Draw

A blood sample is collected and processed to provide the 1 mL of serum required for foodANALYZER.

4

Laboratory Analysis and Report

The laboratory measures total IgG reactivity to 286 food antigens using multiplex ELISA-based Nano-Bead Technology. Typical turnaround is 24 hours after the sample is received.

5

Optional Physician Follow-Up

Direct purchasers receive a link to register in the secure patient portal. If you want further discussion or additional evaluation, you can book an appointment with Dr. Kiswani-Barley.

Food Testing Pricing

Transparent pricing with no hidden fees. Choose the test that's right for your symptoms.

Most Popular

Food Sensitivity Test

IgG Testing

$310

Total IgG reactivity testing across 286 food antigens

  • 286 food antigens tested
  • 13 food groups covered
  • Typical 24-hour lab turnaround
  • Multiplex ELISA-based Nano-Bead Technology
  • Optional physician review available
  • Clinical context available

Allergy Test

IgE Testing

$310

Testing for allergen-specific IgE sensitization

  • 295 allergens tested
  • Food & environmental allergens
  • 24-hour results
  • Supports allergy evaluation
  • Optional physician review available
  • Treatment recommendations
Learn more about the Allergy Test
Save $80

Combo Test

IgE + IgG

$540

Complete food allergy and sensitivity panel

  • Both IgE (295) + IgG (286) tests
  • Most comprehensive option
  • Differentiate allergies vs sensitivities
  • 24-hour results
  • Optional physician review available
  • Structured dietary guidance available
Learn more about the Combo Test

Test prices do not include the blood draw. One phlebotomy fee applies per draw: $75 walk-in or $129 mobile.

Outstanding medical care and professional staff

"I highly recommend Dr. Kiswani-Barley to anyone looking for a compassionate and professional physician. The level of medical expertise and attentiveness is unmatched. Staff included provide exceptional care. They take the time to answer all questions and never make you feel rushed."

Originally posted on Google

Can't say enough good things

"I can't say enough good things about Dr. Kiswani! I am currently a hormone therapy patient of hers, but she has gone above and beyond to help me with my health. She truly cares about her patients and takes the time to listen and understand your concerns."

Originally posted on Google

Read reviews on Google

Frequently Asked Questions About Food Sensitivity Testing

Get answers to common questions about IgG food sensitivity testing.

Ready to Learn More About Potential Food Triggers?

Explore your total IgG reactivity to 286 food antigens through Access Medical Labs and use the report to guide a more personalized review of your diet. An optional physician visit can place the findings in clinical and nutritional context.

Medically Reviewed by Dr. Kiswani-Barley
Last updated: November 2026

Healthcare Services Across Florida

Thrive RX provides telehealth healthcare services services throughout Florida. Based in Weston, we serve patients across South Florida and statewide.

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