search for and buy antibodies from Sigma-Aldrich.

Monoclonal and polyclonal primary antibodies are focused on cell biology, neurobiology and molecular biology. Secondary antibodies targeting multiple host’s IgG are conjugated to alkaline phosphatase, peroxidase, biotin, FITC and other labels. Other immunochemicals include assay development reagents, such as purified immunoglobulins, controls, blocking agents, buffers and substrates.


Find and buy antibodies using the antibody explorer at Sigma-Aldrich. Find It First – Looking for alternatives for discontinued Santa Cruz antibodies & products?
Simply enter the Santa Cruz product number in the search bar below or search by your protein target to find and buy your antibody of interest from your trusted provider.



Explore Recombinant, Polyclonal & Monoclonal Antibodies

Search Within Refine Search (Optional)
All Antibodies

Primary Antibodies Only

Secondary Antibodies Only


For additional products for your gene of interest, please use our Gene-Specific Product Search.

Learn more about western blotting. Find out how to achieve better reproducibility in western blots.

Duolink® secondary antibody technology from Sigma-Aldrich
Duolink®, Protein Interaction Technology
See what you’ve never seen before with amplified Duolink® secondary antibody technology.
Combine the specificity of secondary antibodies, with the sensitivity afforded by rolling circle amplification to detect endogenous proteins in cells and tissues.
Search for and buy antibodies specific to organelle and subcellular markers
Organelle Marker Antibodies

• Comprehensive panel for organelle &
  subcellular localization studies
• Polyclonals and monoclonals for
  double-staining immunofluorescence
• Designed to recognize multiple species
  with low cross-reactivity

Prestige Antibodies®
• Most Validated Antibodies on the
• Supported by the Human Protein Atlas
• Monoclonal and Polyclonal

Protocols for Prestige antibody western blots, immunoblotting, antibody purification and more.
Protocols & Technical Articles
Find related protocols for western blotting, IHC, FISH, ELISA and Prestige protocols. Find technical information related to monoclonal antibodies, inflammation and The Cell Atlas.