Which tests measure Peanut Specific IgE?

Peanut Specific IgE is measured in 1 test on BiomarkersLabs.com, including 15 Common IgE Foods Test.

Biomarker Reference · f13 Peanut sIgE

What does the Peanut Specific IgE test measure?

Q: Why is Peanut Specific IgE measured?

Whole-extract peanut IgE is sensitive but poorly specific for clinical allergy because it captures benign cross-reactive sensitisation. A positive whole-extract result on a 15-food screen should prompt component-resolved testing (notably Ara h 2) before any dietary restriction, and a reaction history remains central to the assessment.

Q: What is the reference range for Peanut Specific IgE?

The standard reference range for Peanut Specific IgE is Class 0 (<0.35 kU/L) negative; Classes 1–6 semiquantitative. Whole-extract IgE does not distinguish storage-protein from cross-reactive sensitisation.. Reference ranges vary by laboratory and assay platform — interpret in context of the issuing laboratory's stated range.

Peanut Specific IgE (f13 Peanut sIgE) is a clinical biomarker used in food-sensitivity-allergy assessment. Whole peanut extract contains the storage proteins Ara h 1, 2, 3, and 6, the lipid transfer protein Ara h 9, and the Bet v 1 homologue Ara h 8. It is measured in 1 laboratory test on BiomarkersLabs.com.

Reference Range: Class 0 (<0.35 kU/L) negative; Classes 1–6 semiquantitative. Whole-extract IgE does not distinguish storage-protein from cross-reactive sensitisation.
Units: kU/L, kUA/L
Measured In: 1 test
Category: Food Sensitivity

Functional medicine optimalUndetectable (Class 0) is desirable; the magnitude correlates only loosely with clinical risk and never substitutes for history or challenge.

What is Peanut Specific IgE?

Whole peanut extract contains the storage proteins Ara h 1, 2, 3, and 6, the lipid transfer protein Ara h 9, and the Bet v 1 homologue Ara h 8. Ara h 2 is the allergen most predictive of systemic reactivity, while isolated Ara h 8 sensitisation is usually a benign consequence of birch-pollen allergy.

Why is Peanut Specific IgE measured?

Whole-extract peanut IgE is sensitive but poorly specific for clinical allergy because it captures benign cross-reactive sensitisation. A positive whole-extract result on a 15-food screen should prompt component-resolved testing (notably Ara h 2) before any dietary restriction, and a reaction history remains central to the assessment.

Reference ranges

Standard reference: Class 0 (<0.35 kU/L) negative; Classes 1–6 semiquantitative. Whole-extract IgE does not distinguish storage-protein from cross-reactive sensitisation.
Functional medicine optimal: Undetectable (Class 0) is desirable; the magnitude correlates only loosely with clinical risk and never substitutes for history or challenge.
Units: kU/L, kUA/L

Reference ranges vary by laboratory and assay platform. Interpret in context of the issuing laboratory's stated range.

Tests that measure Peanut Specific IgE

1 test on BiomarkersLabs.com include this biomarker.

BML-FSA-002Comprehensive

15 Common IgE Foods Test

Peanut Specific IgE reference range in this test: Class 0 (<0.35 kU/L) negative; Classes 1–6 semiquantitative. Whole-extract IgE does not distinguish storage-protein from cross-reactive sensitisation.

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