Reagents for Immunoassays

Your Dedicated Supplier for Substrates and Immunoassay Reagent Needs

As an IVD kit manufacturer developing commercial immunoassays or a researcher developing non-commercial kits, you require the most reliable, sensitive reagents available. We've gathered over 30 years of experience developing industry-leading reagents fit for your needs. As your partner, we offer a continuously growing portfolio of colorimetric and chemiluminescent formulas with a wide range of kinetic rates and sensitivity levels, allowing you to select the most appropriate formula for your application. Our popular solutions include K-Blue®, K-Gold®, ABTS, TMB Membrane, Chemiluminescent Ultra, Chemiluminescent AP Select, and more.

Illuminate with K-Blue® ONE

Our new chemiluminescent HRP substrate, K-Blue® Luminescent ONE, is a ready-to-use formula designed to simplify workflow and improve efficiency.

Our substrates offer up to 48 months of shelf life — optimizing your stock capacity and saving you money on costly supplies. In addition, we've developed our formulas to meet and adapt quickly to evolving regulatory environments, so you can rest assured knowing the solutions you need will easily meet regulatory standards.

Our quality management system is ISO 9001 certified, highlighting our understanding of the quality and standards you expect from us. If you have any specific questions about the different substrates we offer, please reach out to our team of experts.

Colorimetric AP Microwell

Our ready-to-use K-Gold liquid formula doesn't require the mixing of additional ingredients or stabilizing agents.

Colorimetric HRP Microwell

Our K-Blue solution line offer multiple sensitivity levels, a long shelf life, and have low background.

Colorimetric HRP Membrane

Our TMB Membrane solution line is optimized for use with western blot, dot blot, and line assays and offers great sensitivity.

Chemiluminescent AP

Easy-to-use, sensitive, and ideal for detecting AP enzymes in a wide range of assay formats, including ELISA and western blot.

Chemiluminescent HRP

Sensitivity ranging from picogram to femtogram, easy-to-use, and ideal for detecting HRP enzymes in various assay formats.

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Popular Items

K-Blue® Luminescent ONE Substrate

K-Blue® Luminescent ONE HRP substrate is a ready-to-use solution ideal for microwell applications where horseradish peroxidase enzyme detection is required from nanogram to picogram levels.

K-Blue® Luminescent Substrate

K-Blue Luminescent HRP substrate is ideal for microwell applications where horseradish peroxidase enzyme detection is required from nanogram to femtogram levels.

K-Blue® Aqueous TMB Substrate

K-Blue® Aqueous is a revolutionary 100% solvent-free TMB substrate and is ideal for end users working under strict regulatory requirements.

K-Blue® Advanced Plus TMB Substrate

K-Blue Advanced Plus is a one-bottle stabilized chromogenic substrate for use with horseradish peroxidase immunoassays. The TMB substrate offers high activity, long-term stability and is REACH compliant.

K-Blue® Advanced TMB Substrate

K-Blue® Advanced is a one-bottle chromogenic substrate for use with HRP immunoassays. K-Blue Advanced TMB Substrate offers high activity, long-term stability and is REACH compliant.

Enhanced K-Blue® TMB Substrate

Enhanced K-Blue® is a one bottle chromogenic substrate for use with horseradish peroxidase (HRP) immunoassays. The substrate offers high activity and the longest shelf life of Neogen's TMB substrates.

K-Gold® Plus PNPP Substrate

K-Gold® Plus is a one-bottle chromogenic substrate for use with alkaline phosphatase immunoassays. PNPP substrate offers excellent activity and signal-to-noise ratio.

TMB Membrane Substrate

TMB Membrane Substrate develops an insoluble, permanent dark blue reaction in the presence of peroxidase. The substrate is intended for western blot, dot blots, and line assays.

Chemiluminescent AP Select Plus 450 Substrate

Neogen® offers ultra-sensitive chemiluminescent formulations for the detection of alkaline phosphatase (AP) enzyme in microwell and membrane assay applications.