Collection: Gold Nanoparticles for Lateral Flow Assays - "Lateral-Flow-Easy" Series

Gold Nanoparticles for Biosensing

Gold nanoparticles are widely used in biosensing because their unique physicochemical properties enable highly sensitive and selective detection of biological analytes. This makes them valuable components in diagnostics, medical research, environmental monitoring, and rapid test development.

Why Monodispersity and Purity Matter

Two properties are especially important for biosensing performance: monodispersity and purity. Monodisperse gold nanoparticles provide consistent optical and electronic behavior, which improves signal reproducibility, sensitivity, and measurement reliability. High purity helps prevent interference during surface functionalization and reduces non‑specific interactions, supporting greater assay accuracy and specificity.

Gold Nano‑Spheres for Lateral Flow Assays

NanoBrand Gold Nano‑Spheres combine monodispersity, purity, and spherical morphology to support reliable performance in biosensing applications such as pregnancy tests, disease detection kits, and other lateral flow assays (LFAs). Their uniform shape and smooth surface make them well suited for surface modification and bioconjugation, helping generate stronger signals, better sensitivity, and improved batch‑to‑batch consistency. For LFA development, we offer gold nanoparticles in the most commonly used sizes and in two concentrations: OD 20 and OD 50.

Surface Options for Flexible Conjugation

To support different assay formats, our “Lateral‑Flow‑Easy” nanoparticles are available with either citrate surface coating or PEG5000‑carboxylate surface coating. Citrate‑coated gold nanospheres are suitable when easy surface replacement by passive adsorption is needed, while carboxylated nanoparticles support direct antibody conjugation for targeted recognition.

Available Gold Nanoparticle Products: