Primary, secondary, and custom antibodies seeking binding relationships
Explore our extensive portfolio of more than 51,000 high-quality primary and secondary antibodies, supported by an extensive range of antibody-related products and custom services. Our antibody assays are validated by thousands of citations worldwide, helping you achieve superior results in a wide range of detection and purification applications.

Featured antibody categories

High-quality primary antibodies for cancer research, epigenetics, immunology, neuroscience, stem cell research, and more, validated for multiple applications, including western blotting, immunoprecipitation, and flow cytometry.

We offer a wide range of ELISAs and related immunoassays that use antibody pairs for single-analyte (ELISA Kits) and multi-analyte (Luminex™ Assays) detection for the accurate quantitation of intracellular or extracellular proteins.

Validated, conjugated and unconjugated secondary antibodies for fluorescent – including our Alexa Fluor conjugates – colorimetric, and chemiluminescent detection. Our secondary antibodies are suitable for western blotting, IHC, ICC, and flow cytometry.

View our diverse portfolio of tools for immunogen preparation, immunization, screening, and isotyping, and our antibody labeling reagents to help improve signaling and detection results.

With a proven track record of >18,000 custom antibody projects completed to date, our custom antibody development, purification, and screening services deliver quality, consistency, and performance.

Choose from a wide selection of antibody purification products to achieve the selective enrichment or specific isolation of antibodies from serum (polyclonal antibodies), ascites fluid, and hybridoma cell lines.

Streptavidin, avidin, and NeutrAvidin protein conjugates with fluorophores and enzymes are key components of many immunoassays and cell analysis methods involving biotinylated (biotin-labeled) primary or secondary antibodies. Learn about our wide selection.

View our extensive selection of antibody and protein labeling kits for the direct attachment of intensely fluorescent dyes, enzymes, and secondary labels, including Molecular Probes™ Alexa Fluor™ dyes, Qdot™ labels, R-phycoerythrin, and biotin.


Antibody Performance Guarantee

Antibody Performance Guarantee

As a leading provider of high-quality, validated antibodies, our products are used by researchers around the world. Our customers purchase with confidence, knowing that we stand behind the quality of our antibodies with the Invitrogen™ antibody performance guarantee.

Antibody Data Exchange Program (formerly Innovators Program)

Antibody Data Exchange Program

We are committed to collecting performance data and researchers' feedback on our qualified antibodies, and offer rewards when you share your data with us. Submit your data for qualified antibodies to the program and receive additional antibodies of equal or lesser value absolutely free.


Antibodies seeking partners for binding relationships


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