The Lateral Flow Walnut assay is used for the qualitative detection of Walnut residues in surface samples got from e.g. production lines. The assay is also applicable for food samples. The assay is applied for the detection of small amounts of Walnut contaminations.
Walnut contaminations in food possibly elicit hypersensitivity in sensitive persons. Food production lines have to be free of residues to prevent these allergic reactions. The effectiveness of cleaning can be verified by using the Lateral Flow Walnut Swabbing method.