What is Peach and Why Does the Food Zoomer Test for It?

Stone fruit protein antigen

Peach refers to proteins and peptides from the fruit Prunus persica that can trigger antibody responses. Measuring IgA and IgG against peach proteins reveals whether the immune system has mounted a mucosal or systemic response, offering insight into food-related immune patterns that may affect digestion, skin, or inflammation.

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Peach

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About Peach

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About Peach

Overview and History

Peach biomarkers represent specific proteins and peptides from Prunus persica, a stone fruit in the Rosaceae family. Key biochemically relevant proteins include storage and defense molecules such as lipid transfer proteins (LTPs), profilins, and PR‑10 family members—some of which are recognized as common plant food antigens. Allergen and immunology research identified major peach proteins (often labeled Pru p variants) as targets of human antibodies. In plants these proteins typically function in nutrient storage or defense against stress; in people they can be immunogenic, generating measurable IgA or IgG responses that are useful for mapping exposures and immune patterns.

Interpreting Highs and Lows

Elevated antibody levels to peach proteins may indicate repeated exposure or measurable immune recognition of those proteins. IgA elevations more closely reflect mucosal or gut-associated immune activity, while IgG elevations reflect systemic immune memory or circulating antibody production. Interpretation should consider which isotype is raised and whether other related food or plant proteins show similar patterns. Low or undetectable levels may reflect limited recent exposure, immunologic tolerance, or the absence of a measurable antibody response. Single-marker results are most informative when viewed alongside the full Food Zoomer profile and clinical context to identify consistent patterns rather than standalone conclusions.

Featured Test

Peach is included in Food Zoomer to capture immune reactivity to a common stone fruit and its cross-reactive plant proteins. Measuring peach-specific IgA and IgG helps identify whether fruit proteins are part of broader reactivity clusters, informing targeted dietary decision-making and personalized nutrition planning within the panel’s structured domains.

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Peach FAQs

What is Peach and why is it important?

Peach represents the proteins and peptides found in Prunus persica that can interact with the immune system. Detecting antibodies to peach helps show whether your body recognizes these fruit proteins. That information can clarify if peach or related fruits fit into broader patterns of food-related immune activity.

What does it mean if my Peach levels are low?

Low peach antibody levels generally mean there’s little measurable immune recognition of peach proteins. This can reflect limited recent exposure, tolerance, or simply no detectable antibody response. Low results are most meaningful when compared with other markers on the full panel to see overall dietary immune patterns.

What does it mean if my Peach levels are high?

High levels suggest measurable immune recognition of peach proteins, with IgA pointing toward mucosal/gut-associated activity and IgG indicating systemic antibody presence. Elevated results may reflect repeated exposure or cross-reactivity with other plant proteins, and should be interpreted in the context of the complete Food Zoomer profile and clinical information.

Why is Peach included in the Food Zoomer?

Peach is a commonly eaten fruit with proteins known to cross-react with other plant foods. Including peach helps providers detect fruit-related immune patterns, assess cross-reactivity across domains, and target nutrition planning based on clustered immune responses rather than isolated findings.

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