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Turning a Guessing Game Into a Starting Point for an Elimination Diet

Turning a Guessing Game Into a Starting Point for an Elimination Diet

Figuring out which specific foods might be contributing to symptoms like bloating, headaches, or skin issues is often a frustrating process of trial and error. Everlywell's Food Sensitivity Test was built to give that process a more structured starting point, using a blood sample to flag foods worth investigating further through a guided elimination diet.

Measuring IgG reactivity across a genuinely wide food list

The test measures IgG (Immunoglobulin G) antibody reactivity levels against 96 common foods — spanning dairy, fruits, vegetables, grains, meats, seafood, seeds, nuts, and spices — giving a broad initial picture rather than testing only a narrow handful of suspected culprits.

A simple at-home blood sample collection

Rather than requiring a clinic visit, the test is collected via a simple finger-prick blood sample at home, then mailed back using included prepaid postage — processed at a CLIA-certified, CAP-accredited lab, with results reviewed by an independent physician before being delivered through an online portal.

Results specifically meant to guide an elimination diet, not stand alone

Everlywell is explicit that the test's intended use is to guide a temporary elimination diet with a structured add-back challenge — meaning the results are designed as a starting point for further dietary investigation, rather than a definitive, final diagnosis of food sensitivity on their own.

Timing matters for accurate results

Because IgG antibodies break down roughly 28 days after a food is no longer consumed, the test is most informative when the foods being tested have genuinely been eaten in the preceding 2-4 weeks — a detail users need to actively plan around rather than taking the test immediately after already cutting out suspected trigger foods.

An important, genuine limitation worth understanding clearly

It's worth being direct about a real scientific debate here: several allergists and dietitians interviewed by health publications have raised concerns that IgG antibody presence doesn't necessarily correlate directly with symptom severity, and some experts have specifically questioned whether elevated IgG levels reliably indicate a genuine food sensitivity at all, as opposed to simply reflecting recent, normal food exposure. This is a different test entirely from an allergy test (which measures IgE) and does not diagnose food allergies, which can be medically serious.

A more extensive option for broader testing

Beyond the standard 96-food test, Everlywell also offers a Food Sensitivity Comprehensive Test covering 204 foods — for anyone wanting the broadest possible initial screening before narrowing down through an elimination diet.

FSA/HSA eligible for genuine cost flexibility

The test is eligible for FSA and HSA fund usage — a practical detail that can meaningfully reduce the out-of-pocket cost for anyone with access to these health spending accounts.

At a glance

Who it suits

This test suits anyone curious about starting a more structured, informed elimination diet and wanting a data point to narrow down which foods to investigate first. It's worth approaching the results as one input among several rather than a definitive diagnosis, given genuine scientific debate about how reliably IgG levels correlate with actual symptoms — and anyone with significant, persistent, or severe symptoms should still consult a doctor, allergist, or registered dietitian rather than relying on this test alone. Explore the Everlywell Food Sensitivity Test — **

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