How Chemical Diagnostics Work

Chemical diagnostics are a cornerstone of modern healthcare, yet many people encounter these tools without ever learning how they work. At their core, most diagnostics rely on simple chemical principles translated into accessible formats.

Many common tests—such as pH strips or lateral flow assays—use chemical reactions that produce visible color changes. These reactions occur when a target molecule interacts with a reagent designed to bind or react selectively. The result is a visual signal that can be interpreted without advanced equipment.

However, no test is perfect. Sensitivity, specificity, and environmental factors all influence results. Understanding these limitations is just as important as understanding the chemistry itself. Diagnostics are tools for early awareness, not definitive answers.

At BioAccess, we focus on demystifying these processes. By teaching how chemical diagnostics work and where their limitations lie, we aim to build scientific literacy and empower individuals to engage more confidently with their health.