CD solutions contain gold nanoparticles that are exceptionally tiny, typically falling within the size range of 1 to 100 nanometers.
These nanoparticles showcase distinctive optical characteristics, such as a distinct red, pink, or purple hue, attributed to the interaction between light and particles at the nanoscale. As a result, colloidal gold or gold nanoparticles find application in binding with detection molecules to provide visual cues in numerous diagnostic tests, thereby boasting extensive utility in diagnostic healthcare. CD finds diverse applications across various fields.
