BioReady Gold nanospheres and nanoshells were covalently linked to Rat anti-Mouse IgG. Lateral flow assays were run with half-log serial dilutions of Mouse IgG on membranes striped with Rabbit anti-Mouse IgG.

Drop-In Integration

BioReady gold nanospheres and nanoshells are a direct replacement for other commercially available lateral flow labels. Our technical staff can help you optimize a protocol to achieve maximum sensitivity in your assay system.


Gold nanoshells have a blue color, and when used in conjunction with gold nanospheres, enable multiplexed lateral flow assays.

Multiple Surfaces

BioReady gold nanoparticles are available with a choice of different surface depending on your application. Please contact us to discuss which BioReady product is best for you.

I have ordered carboxylic acid functionalized AuNP from nanoComposix. Their nanoparticles are very well characterized and easy to use, which saved my a lot of time on troubleshooting. Besides high quality products, I also received a lot of help and support from [the nanoComposix Support Team] which boosted my experiment speed and skills. Both the product and support I achieved from nanocomposix is the best I’ve ever experienced.
– Bochao Lu, University of California, Berkeley

Carbonate · Efficient adsorption

Ultra-clean and displaceable surface for rapid and efficient adsorption of proteins. The pH of the gold solution is pre-optimized for coupling to antibodies.

Carboxylic Acid · Flexible binding chemistry

Carboxylic acid groups on gold nanoparticles provide anchor points for covalent protein attachment.

NHS · 1-step conjugation

Dried and dispersible, NHS gold nanoparticle powders covalently couple antibodies to the nanoparticle surface in a 1-step reaction.

Streptavidin · Biotinylated binding

Streptavidin coated gold nanoparticles strongly bind to biotin labeled targets with high specificity.


Product Name Particle Type Concentration Size
BioReady Carbonate Nanosphere 4.5 OD 40 nm
520 nm
BioReady Carboxylic Nanosphere 20 OD 40 nm
520 nm
BioReady Carboxylic Nanoshell 20 OD 150 nm
800 nm
BioReady Streptavidin Nanosphere 10 OD
40 nm
520 nm
BioReady Streptavidin Nanoshell 10 OD
150 nm
800 nm
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Nanoshells produced under license to United States patent numbers 6,344,272, 6,685,986, and 7,371,457. See for more information.