What are polyclonal antibodies?

Polyclonal antibodies are typically produced by the inoculation of a suitable mammal, such as a mouse, rabbit, or goat. Larger mammals are often preferred as the amount of serum collected is greater. An antigen is injected into the mammal, typically over several weeks, inducing the B-lymphocytes to produce immunoglobulins (IgG) specific for the antigen. This polyclonal IgG is purified from the mammal’s serum.

Featured antibody related categories

We offer competitively priced protocol packages (immunization schedules for rabbits, goats, etc.) for producing custom polyclonal antibodies against peptide and protein antigens.

Validated, conjugated and unconjugated secondary antibodies for fluorescent, colorimetric, or chemiluminescent detection; suitable for applications such as western blotting, IHC, and flow cytometry.

View our wide selection of antibody and protein labeling kits for the direct attachment of fluorescent dyes and labels, including Alexa Fluor dyes, Qdot labels, R-phycoerythrin, and biotin, to IgG antibody.

Explore our diverse collection of labeled and unlabeled antibodies, and antibodies related products to meet the needs of your antibody applications including western blotting, immunofluorescent imaging, immunoprecipitation, immunoassays, immunohistochemistry, and more. 


Partner with us to scale-up your process or product development pipeline with bulk quantities of high-quality immunoassay reagents and biochemicals. We offer a variety of compounds, devices, and resins for your large-scale applications.  

Complete request form