COVID-19 assay development and reagents

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❮ Spherical

High Sensitivity Gold Conjugation Kit for Lateral Flow·

In support of our customers’ efforts to address the global community’s urgent need for rapid point-of-care COVID-19 testing, we are temporarily offering 50% off this kit for first-time customers (use discount code “KIT-50” at checkout), as well as our 40 & 80 nm Gold Conjugation Kit.

New to covalent conjugation? Need increased assay sensitivity?

Imagine an optimized system with time-after-time consistency that provides increased sensitivity and saves you time and money!

Benefits of the kit include:

  • Pre-validated consumables eliminate the risk of purchasing non-compatible reagents, saving weeks to months of unnecessary troubleshooting
  • Increase your assay sensitivity up to 20-fold with 150 nm gold nanoshells compared to 40 nm gold* nanoparticles
  • Reduces antibody costs up to 65% compared to physisorption
  • Saves time by reducing the number of conjugations necessary to find optimal antibody pairs

See more benefits +

Already a conjugation expert? This kit eliminates the need to pre-screen and validate critical reagents and supplies to ensure your best chance of success when starting out with covalent conjugation to gold nanoshells*.


Kit includes 10 mL of BioReady 150 nm Gold Nanoshells with a carboxyl surface, provided at 20 OD. Contact us to order the kit with BioReady 40 or 80 nm Gold Nanospheres. See for list of other buffers and reagents provided.



First-time customer? Use offer code “KIT-50” at checkout for 50% off your first kit purchase. Only applies to 1 kit per person.

Product number: GSZR150-10M

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  Last Call – Discontinued and premium one-off products offered at reduced prices

Specifications & CoA

TEM Diameter Size Distribution (CV) Example Certificate of Analysis
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155 nm ± 15 nm ≤ 15% Download Example CoA

Note: approximate ranges below are dependent on diameter

  • Hydrodynamic diameter (DLS): TEM diameter plus 5 to 25 nm
  • Zeta potential: –40 to –70 mV
  • pH of solution: 6.0 to 9.5
  • Particle surface: carboxyl
  • Solvent: 0.02 mM potassium carbonate solution
  • Peak wavelength (λmax): 770 to 840 nm

More Info & Documentation


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