Lateral Flow - Food Allergens

Lateral Flow Devices (LFDs) are rapid, user-friendly screening tools widely adopted in the food industry for on-site testing. They function via capillary migration across a test strip:

• The sample extract moves along a membrane containing antibodies conjugated to colored particles, typically colloidal gold.
• If the target allergen is present, a visible Test Line appears.
• A Control Line confirms proper test performance.
• A Hook Line is sometimes included to counter the “hook effect”—a phenomenon where very high analyte levels can reduce signal intensity.

These tests are ideal for routine monitoring, especially in facilities without sophisticated lab infrastructure.