Gemina makes dual-affinity binders that attach capture molecules to surfaces, and GemGold gold nanoparticles and conjugates that carry the signal. Both are designed to put every antibody to better use.
Passive attachment
Controlled orientation with a Gemina binder
Dual-affinity proteins that attach capture molecules to gold, cellulose, polystyrene and glass in a controlled orientation. Designed to help developers improve signal, use less antibody and move beyond nitrocellulose.
Explore GemChem BindersUltra uniform gold nanospheres and gold-binding conjugates that carry your signal. Streptavidin or Protein G attaches to the particle in a controlled orientation, ready for your antibody.
Explore GemGoldRapid tests are used where laboratory testing is not available. How well they perform depends on how each part is assembled, and one of the most important details is how capture molecules sit on the surfaces and particles. Better control over that assembly is designed to give developers better tests at lower cost.
Products designed to position capture molecules so they can reach their target.
Better orientation is designed to let developers use less antibody for the same or stronger signal.
Binders can be tuned to different surfaces, and GemGold conjugates to different capture chains. The top binder can be tuned to capture molecules beyond antibodies.
Evaluate with your own materials, then pilot or license, with a clear process at each step.
Simplified test development and manufacturing
AACC 2023. Cellulose-binding streptavidin fixes capture antibodies to cellulose for a SARS-CoV-2 antigen lateral flow test, with no performance change after accelerated stability testing.
ADLM 2025. A flow-reactor method that makes uniform, citrate-capped 35 nm gold nanospheres at scale for lateral flow tests.
Tell us about your assay and what you want to improve. We’ll talk through whether a Gemina product is the right fit, then help you test it side by side with your current process, using your own antibodies and materials. If the results support it, we can move to a pilot, a licence or a supply agreement.
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