Primary Antibodies, Reagents & Tools

Primary Antibodies, Reagents & Tools

What are Primary Antibodies?

Primary antibodies can be monoclonal or polyclonal depending on how they are developed. A polyclonal antibody is derived from a collection of B cells and can recognize multiple epitopes on the same antigen. In contrast, a monoclonal antibody is produced from a single B cell and can recognize only one unique epitope.

Primary Antibody Uses

Primary antibodies directly bind to specific antigens in a tissue or sample. They are useful for detecting, measuring and purifying proteins or biomolecules in applications such as ELISA, flow cytometry, immunofluorescence, immunochemistry, western blotting or immunohistochemistry. They can also be conjugated to reporter enzymes or fluorophores to aid detection or quantification of the target proteins.

For research applications, primary antibodies are often used in combination with reagents and buffers. Bio-Rad offers over 8,000 high quality antibodies and reagents to help you achieve your research goals. Browse below by research area, application, product type or target species to find the right primary antibody or reagent for your experiment. Alternatively, you can use the pathways below to find your ideal product.


Antibodies by Research Areas

Innate Immunity Antibodies

Antibodies for studying dendritic cells, macrophages, monocytes, NK cells, complement proteins.

Immunology Antibodies

Antibodies for innate and adaptive immune cells, including cell surface molecules, receptors, cytokines, chemokines, immune regulation and veterinary antibodies.

Veterinary Antibodies

Veterinary antibodies & associated conjugates available including livestock, domestic animals, avian, primates.

Cell Health Products

Antibodies, kits and reagents to assess viability, proliferation, autophagy and apoptosis to determine the health of your cells.

Cell Biology Antibodies

Antibodies covering key research areas such as cellular morphology and cellular structures.

Cancer Research Antibodies

Antibodies, proteins and other reagents for all your cancer research needs.

Regulated Cell Death

Antibodies and kits for identifying key stages of cell death.

Microbiology Antibodies, Antigens

Our microbiology product range includes primary antibodies and antigens (mostly recombinant) suitable for ELISA and WB.

Neuroscience Antibodies

Antibodies for myelin basic protein and the highly referenced microglia marker, F4/80.

Epitope Tag & Reporter Proteins

V5 antibodies, His-6 antibodies, c-myc antibody and DYKDDDDK tag monoclonal antibodies in different pack sizes.

Stem Cell Antibodies

Antibodies for use in stem cell research in particular hematopoietic, mesenchymal and endothelial stem cells.

Cell Proliferation Antibodies

Antibodies and kits to detect and measure cell proliferation.

Biotin Conjugated Antibodies

Our range of biotin conjugated antibodies detect a wide variety of antigens from several species including human, mouse, and rat. We also have biotin conjugated negative control antibodies against rat and mice isotypes. Biotin conjugated antibodies can be used for several applications including flow cytometry, ELISA, western blotting, and immunohistochemistry, and are detected using a labeled streptavidin.

Infectious Disease Antibodies

Infectious disease research is based on multidisciplinary scientific and diagnostic development work and application workflows, incorporating techniques and knowledge from human medicine via translational model animals to veterinary pathologies.


Validated Antibodies


PrecisionAb Antibodies - Extensively Validated Antibodies for Western Blotting

Extensively Validated Antibodies for Western Blotting

The western blotting experts at Bio-Rad have joined forces with the antibody experts at Bio-Rad to develop PrecisionAb Antibodies. These premium antibodies for western blotting provide superior performance and reproducibility to help you produce the highest-quality western blotting data.

Antibodies by Validation Type


Reagents and Tools

Antibody Conjugation Kits

A convenient way of adding a label to an antibody. The label required will vary according to your application and experimental setup.

Antibody Manufacturing Tools

Antigen selection to antibody production, purification, isotyping, conjugation, storage & assay development.

Antibody Purification and Assay Kits

An extensive portfolio of assay kits for studying various processes and research areas such as cancer, arthritis or Alzheimer’s.

Application Buffers, Reagents

Buffers for cell permeabilization, blocking reagents for ELISA & WB, isotyping kits, mycoplasma detection reagents.

Cell Proliferation Reagents

We offer two methods for investigating cell growth and cell proliferation: alamarBlue & BrdU kits and antibodies.

Isotype Controls

Access our handy tool to select the relevant tissue-specific isotype control for your experiment.

SpyTag and SpyCatcher Products

Reagents supporting SpyTag and SpyCatcher technology, for use with TrailBlazer Antibodies and proteins that incorporate a SpyTag peptide.


Diagnostic Assay Development
Associated Product Areas