Gold is one of the earliest discovered metals. Its research and application history can be trace

Gold is one of the earliest discovered metals. Its research and application history can be traced back at least thousands of years ago. With the development of nanotechnology, a variety of metal nanoparticles have been used in a wide range of medical and biological applications. Among them, gold nanoparticles (AuNPs) have been attractive because of their unique functional properties and easy synthesis. The inherent features (optical, electronic, and physicochemical properties) of AuNPs can be altered by changing their characteristics (such as shape, size, and aspect ratio). They have been applied in drug and gene delivery, photothermal therapy (PTT), photodynamic therapy (PDT) and radiation therapy (RT), diagnosis, X-ray imaging, computed tomography (CT), and other biological activities.

The colloidal gold-based test strip is a technique that combines antigen-antibody immune reaction with colloidal gold labeling tracer technique for qualitative and quantitative detection of antigen and antibody content. The advantages of the colloidal gold test strips, such as rapidity, simplicity, low cost, and good stability, have enabled the technique to be widely applied to the diagnostics.

Here we summarize the process and tips for the development of colloidal gold test strips. We hope to help you solve the problems you might encounter during the development of this technique.

Cat. No. Product Name

BG-40 DiagNanoTM Gold Nanoparticles, 40 nm

BG-60 DiagNanoTM Gold Nanoparticles, 60 nm

GFC-3K-40 DiagNanoTM Carboxyl, PEG3000 Gold Nanoparticles, 40 nm

GFC-5K-40 DiagNanoTM Carboxyl, PEG5000 Gold Nanoparticles, 40 nm

GFC-3K-60 DiagNanoTM Carboxyl, PEG3000 Gold Nanoparticles, 60 nm

GFC-5K-60 DiagNanoTM Carboxyl, PEG5000 Gold Nanoparticles, 60 nm

GCK-40 DiagNanoTM Gold Nanoparticle Covalent Conjugation Kit, 40 nm

GCK-60 DiagNanoTM Gold Nanoparticle Covalent Conjugation Kit, 60 nm

GPK-40 DiagNanoTM Gold Nanoparticle Passive Conjugation Kit, 40 nm

GPK-60 DiagNanoTM Gold Nanoparticle Passive Conjugation Kit, 60 nm

GPK-LF DiagNanoTM Gold Nanoparticle Passive Conjugation Kit, Lateral Flow

NGC-150 DiagNanoTM Carboxyl Gold Nanoshells, 150 nm

Creative Diagnostics offers a comprehensive list of coated, functional and conjugated gold nanoparticles by precisely surface engineering. We provide gold nanoparticles functionalized with active groups such as NHS, carboxyl, amine and hydroxyl. Conjugated nanoparticles with a variety of biological ligands are also available for your colloid gold test strip development.