There are 2 types of systems we recommend for allergen cleaning verification/monitoring.
Allergen-Specific Lateral-Flow Devices (LFD): LFD is qualitative or semi-quantitative immunochromatographic tests, based on ELISA. They are easy to use, in comparison with their full ELISA counterparts; and they generate results in very little time, without expensive equipment. A set of coloured lines is produced, indicating whether the target allergen was present in the sample or not. The intensity of the line in the test zone is directly proportional to the concentration of the allergen. Semi-quantitative results can be produced by exposing the device to varying amounts of the sample extract, or by using a colour-intensity reader.
Total Protein Swabs: This system detects protein on surfaces and in the rinse water. The rationale is that since most allergens are proteins, a sample found to be protein-free could also be expected to be allergen-free. The system is easy to use, sensitive, and often the most cost-effective option, but it’s not suitable for all environments – for example, the meat and poultry industry.
Checking that surfaces are visually clean will be the first step. In addition to that, I believe a total protein swab system will add a lot of value to verify the presence of allergens on surfaces. I recommend reaching out to Hygiena to inquire about the AllerSnap and PROClean systems.