Technical guides and protocols for lateral flow assays.
Understanding Capillary Flow Time (Sec/4cm) One of the most critical parameters in Lateral Flow Assay (LFA) development is the wicking speed of the nitrocellulose membrane. Often measured as the time required for liquid to travel 4cm (e.g., HF135, HF180), choosing the wrong speed can ruin assay sensitivity. Fast vs. Slow Membranes: The Trade-off Membrane Type … Read more
The Challenge of Complex Food Matrices Detecting allergens like peanut, soy, or gluten in processed foods is notoriously difficult. Unlike clean clinical samples (serum/buffer), food extracts are often viscous, high in fats, and loaded with proteins that cause non-specific binding. This leads to the “Matrix Interference” effect, often resulting in false positives or membrane clogging. … Read more
Introduction CRISPR-Cas12a diagnostics have revolutionized nucleic acid detection, offering sensitivity comparable to PCR with the simplicity of a lateral flow readout. However, a common challenge frustrates researchers worldwide: false positives. In this guide, we explore why background signals occur in CRISPR lateral flow assays and how Due Bio’s Universal Strips help mitigate these issues through … Read more