Food Allergy and Sensitivity Testing (FAST 88)

Uncover hidden food triggers that may be silently driving inflammation and symptoms.

Many people live with persistent symptoms—fatigue, headaches, digestive issues, skin flare-ups, or even mood changes—without realizing that food-related immune responses may be at the root. Some reactions are immediate and obvious, like hives or swelling, while others are delayed, subtle, and harder to detect, causing chronic low-grade inflammation that affects your overall health.

The FAST 88 Test by Infinite Allergy Labs is a comprehensive food allergy and sensitivity panel that screens for 88 commonly consumed foods using four distinct biomarkers: IgE, IgG, IgG4, and complement C3b/d. This advanced approach captures both immediate allergic reactions and delayed sensitivities, giving you a complete view of how your immune system responds to food.

By identifying these hidden triggers, the FAST 88 Test helps you and your provider create personalized dietary strategies to relieve symptoms, calm inflammation, and restore gut and immune balance.

A structured time‑restricted eating protocol that supports metabolic optimization, hormonal balance, and gut rest. FAST 88 can be enhanced when paired with targeted gut and nutrient testing—explore our Advanced Lab Testing offerings for compatible diagnostics.

Why FAST 88 Is Different

Most conventional allergy tests only measure IgE antibodies, which detect immediate, classic allergic reactions (like those causing hives, itching, or anaphylaxis). However, many food reactions are delayed sensitivities involving IgG or IgG4 antibodies, which can lead to inflammation hours—or even days—after consuming a trigger food.

The FAST 88 Test goes beyond standard testing by evaluating:

• IgE – for immediate allergic reactions

• IgG and IgG4 – for delayed immune responses contributing to chronic inflammation

• Complement C3b/d – an inflammatory marker showing amplified immune activation

This multi-layered immune analysis provides a fuller, more accurate picture of how foods may be affecting your body—both short term and long term.

By limiting your eating window, FAST 88 supports improved digestion, insulin regulation, and cellular repair. To support nutrient adequacy and optimize your fasting experience, consider the personalized support available through our Gut Health & Nutrient Optimization Program.

Who Should Consider the FAST 88 Food Test?

This test is ideal for anyone who suspects food-related triggers but has struggled to pinpoint the cause of their symptoms. It’s especially helpful for individuals experiencing:

• Chronic fatigue or brain fog

• Digestive issues like bloating, IBS, gas, or abdominal pain

• Joint pain, stiffness, or unexplained inflammation

• Skin conditions such as eczema, rashes, or acne

• Migraines or recurring headaches

• Mood changes, anxiety, or irritability

• Autoimmune conditions or immune dysregulation

It’s also valuable for:

• Individuals who have tried elimination diets without clear results

• Those with autoimmune disorders looking to reduce inflammatory triggers

• Anyone taking a proactive approach to optimizing gut and immune health

If standard allergy testing has fallen short—or you simply want a more comprehensive understanding of your body’s relationship with food—FAST 88 offers the clarity you need.

If you're seeking weight optimization, improved mental clarity, better digestion, or enhanced metabolic health, FAST 88 may be a great fit. Prefer tailored interpretation and planning? Book a Consultation with our expert to customize a protocol suited to your goals and health history.

Why Food-Related Immune Activation Matters

When your immune system reacts to certain foods, it can trigger a cascade of inflammation. Over time, this ongoing immune activation can:

• Disrupt the gut lining and microbiome

• Aggravate autoimmune conditions

• Contribute to joint pain, headaches, and skin flare-ups

• Impair energy production and cognitive function

• Weaken the immune system’s ability to handle other stressors

By identifying and eliminating these triggers, you can reduce inflammation at the source, allowing your gut, immune system, and metabolism to rebalance naturally.

This protocol isn’t just about when you eat—it’s about how you fuel recovery, gut repair, and metabolic resilience. Complement your protocol with gut‑focused diagnostics via Advanced Lab Testing, and observe progress based on objective biomarkers.

Benefits of the FAST 88 Food Allergy and Sensitivity Test

• Identifies both immediate (IgE) and delayed (IgG, IgG4) immune responses for a complete assessment

• Screens for amplified inflammatory reactions through complement C3b/d

• Enables personalized dietary strategies and focused elimination plans that are more effective than guesswork

• Supports relief from chronic symptoms, improving gut health, immune function, and overall well-being

With these insights, you’ll gain a clear roadmap for healing—one that helps you feel better without unnecessary dietary restrictions.

A Smarter Way to Find Your Food Triggers

Instead of guessing which foods might be causing your symptoms—or trying endless elimination diets without results—the FAST 88 Test gives you objective, actionable data. It helps you and your healthcare provider create a targeted plan for long-term relief and better health.