Secondary antibodies are best known for their utility as indirect detection reagents, meaning they allow the detection of a protein analyte to which an analyte-specific primary antibody is already bound. To achieve this, secondary antibodies must have specificity for the host species and isotype of the primary antibody, and be labeled with a detectable tag such as an enzyme or fluorescent dye. For example, if a polyclonal primary antibody raised in goat was used to recognize and bind an analyte of interest in a human tissue section, an anti-goat IgG (heavy and light chains) secondary antibody featuring an appropriate label would be required for detection purposes. A main advantage of using secondary antibodies for indirect detection is that the assay sensitivity is improved compared to direct detection with labeled primary antibodies. This results from multiple secondary antibodies binding to each primary antibody and can be especially beneficial when studying low abundance analytes. Labeled secondary antibodies are used for a broad range of immunoassay techniques, including western blotting (WB), enzyme-linked immunosorbent assay (ELISA), and immunocytochemistry (ICC), as well as immunohistochemistry (IHC), flow cytometry, and lateral flow assay (LFA). Despite being synonymous with indirect detection, secondary antibodies can also be used label-free for scientific research, albeit in slightly different ways. One approach involves using unconjugated secondary antibodies as coating reagents for ELISA, where they enable the capture of antibodies from solution. Another method uses unconjugated secondary antibodies as linker reagents to provide signal amplification. For example, a sample might be incubated with an analyte-specific primary antibody, followed by an unconjugated secondary antibody, after which a labeled tertiary antibody (raised against the secondary antibody and featuring a relevant label) could be added for detection. Unconjugated secondary antibodies can also be custom conjugated if the desired product is not available commercially. Researchers performing complex flow cytometry assays or multiplex assays may choose to go down this route to increase flexibility for panel design.
Goat Anti-Chicken IgM Antibody (A282909) | |
1mg/$260 | |
Description: | Goat anti-chicken IgM secondary antibody. |
Applications: | WB, ELISA, IHC-Fr, Immunodiffusion, ICC |
Reactivity: | Chicken |
Conjugate: | Unconjugated |
Goat Anti-Monkey IgG H&L Antibody (A282918) | |
1mg/$250 | |
Description: | Goat anti-monkey IgG H&L secondary antibody. |
Applications: | ELISA, Immunodiffusion |
Reactivity: | Monkey, Human, African green monkey , Cynomolgus monkey, Baboon, Chimpanzee, Rhesus Monkey |
Conjugate: | Unconjugated |
Anti-Human IgM Antibody [MT11 + MT12] (A269909) | |
250µg - 1mg/$265 – $815 | |
Description: | Mouse oligoclonal [MT11 + MT12] antibody to Human IgM. |
Applications: | ELISpot, ELISA |
Reactivity: | Human, Non-Human Primates |
Conjugate: | Unconjugated |
Goat Anti-Dog IgA Antibody (A282912) | |
1mg/$250 | |
Description: | Goat anti-dog IgA secondary antibody. |
Applications: | WB, ELISA, IHC-Fr, Immunodiffusion |
Reactivity: | Canine, Mustelid, Ferret, Wolf |
Conjugate: | Unconjugated |
Anti-Human IgG Antibody [MT145] (A269901) | |
250µg - 1mg/$265 – $815 | |
Description: | Mouse monoclonal [MT145] antibody to Human IgG. |
Applications: | ELISpot, FluoroSpot, ELISA |
Reactivity: | Human, Non-Human Primates |
Conjugate: | Unconjugated |
Goat Anti-Rat IgG H&L + IgM H&L Antibody, Cross-Absorbed (A284113) | |
1mg/$435 | |
Description: | Goat anti-rat IgG H&L + IgM H&L secondary antibody. |
Applications: | WB, IHC-P, ELISA, IHC-Fr, Flow Cytometry, ICC, FLISA |
Reactivity: | Rat |
Conjugate: | Unconjugated |
Rabbit Anti-Human IgE Heavy Chain Antibody (A301084) | |
1mg/$305 | |
Description: | Rabbit anti-human IgE heavy chain secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Human |
Conjugate: | Unconjugated |
Goat Anti-Human Lambda Light Chain Antibody (A115866) | |
10mg/$505 | |
Description: | Goat anti-Human Lambda Light Chain secondary antibody. |
Applications: | Dot, ELISA, WB, IHC, WB, ICC |
Reactivity: | Human |
Conjugate: | Unconjugated |
Anti-Human IgA Antibody [MT57] (A269899) | |
250µg - 1mg/$265 – $815 | |
Description: | Rat monoclonal [MT57] antibody to Human IgA. |
Applications: | ELISpot, FluoroSpot, ELISA |
Reactivity: | Human, Non-Human Primates |
Conjugate: | Unconjugated |
Goat Anti-Monkey IgA Fc Antibody (A116116) | |
10mg/$635 | |
Description: | Goat anti-Monkey IgA Fc secondary antibody. |
Applications: | Dot, ELISA, ICC,IHC-Fr,IF, WB |
Reactivity: | Monkey |
Conjugate: | Unconjugated |
Goat Anti-Rabbit IgA Heavy Chain Antibody (A294820) | |
1mg/$205 | |
Description: | Goat anti-rabbit IgA heavy chain secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Rabbit |
Conjugate: | Unconjugated |
Rabbit Anti-Human IgA Antibody (A301057) | |
1mg/$195 | |
Description: | Rabbit anti-human IgA secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Human |
Conjugate: | Unconjugated |
Goat Anti-Human IgG Fc Antibody (A301067) | |
1mg/$205 | |
Description: | Goat anti-human IgG Fc secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Human |
Conjugate: | Unconjugated |
Goat Anti-Rat IgG Antibody (A284114) | |
1mg/$215 | |
Description: | Goat anti-rat IgG secondary antibody. |
Applications: | WB, ELISA, IHC-Fr, Flow Cytometry, ICC, FLISA |
Reactivity: | Rat |
Conjugate: | Unconjugated |
Goat Anti-Human Kappa Light Chain Antibody (A115860) | |
10mg/$505 | |
Description: | Goat anti-Human Kappa Light Chain secondary antibody. |
Applications: | Dot, ELISA, WB, ICC, IHC |
Reactivity: | Human |
Conjugate: | Unconjugated |
Goat Anti-Mouse IgG F(ab) Antibody (A115981) | |
10mg/$635 | |
Description: | Goat anti-Mouse IgG F(ab) secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Mouse |
Conjugate: | Unconjugated |
Goat Anti-Mouse IgG F(ab) Antibody (A301389) | |
1mg/$205 | |
Description: | Goat anti-mouse IgG F(ab) secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Mouse |
Conjugate: | Unconjugated |
Goat Anti-Hamster IgG H&L Antibody (A294995) | |
1mg/$160 | |
Description: | Goat anti-hamster IgG H&L secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Hamster |
Conjugate: | Unconjugated |
Rabbit Anti-Human Lambda Light Chain Antibody (A301088) | |
1mg/$240 | |
Description: | Rabbit anti-human lambda light chain secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Human |
Conjugate: | Unconjugated |
Goat Anti-Monkey IgG + IgA + IgM H&L Antibody (A116110) | |
10mg/$635 | |
Description: | Goat anti-Monkey IgG + IgA + IgM H&L secondary antibody. |
Applications: | Dot, ELISA, WB, ICC, IHC |
Reactivity: | Monkey |
Conjugate: | Unconjugated |
Goat Anti-Human IgG F(ab) Antibody (A301091) | |
1mg/$195 | |
Description: | Goat anti-human IgG F(ab) secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Human |
Conjugate: | Unconjugated |
Goat Anti-Human IgG + IgM H&L Antibody (A301183) | |
1mg/$195 | |
Description: | Goat anti-human IgG + IgM H&L secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Human |
Conjugate: | Unconjugated |
Anti-Human IgG Antibody [MT91 + MT145] (A269900) | |
250µg - 1mg/$265 – $815 | |
Description: | Mouse oligoclonal [MT91 + MT145] antibody to Human IgG. |
Applications: | ELISpot, FluoroSpot |
Reactivity: | Human, Non-Human Primates |
Conjugate: | Unconjugated |
Rabbit Anti-Pig IgG H&L Antibody (A294504) | |
1mg/$160 | |
Description: | Rabbit anti-pig IgG H&L secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Pig |
Conjugate: | Unconjugated |
Donkey Anti-Rabbit IgG H&L Antibody (A294811) | |
1mg/$160 | |
Description: | Donkey anti-rabbit IgG H&L secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Rabbit |
Conjugate: | Unconjugated |
Goat Anti-Ferret IgG H&L Antibody (A295018) | |
1mg/$180 | |
Description: | Goat anti-ferret IgG H&L secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Ferret |
Conjugate: | Unconjugated |
Rabbit Anti-Human IgG H&L Antibody (A301105) | |
1mg/$160 | |
Description: | Rabbit anti-human IgG H&L secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Human |
Conjugate: | Unconjugated |
Sheep Anti-Mouse IgG H&L Antibody (A301529) | |
1mg/$160 | |
Description: | Sheep anti-mouse IgG H&L secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Mouse |
Conjugate: | Unconjugated |
Goat Anti-Cat IgG Fc Antibody (A295181) | |
1mg/$205 | |
Description: | Goat anti-cat IgG Fc secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Cat |
Conjugate: | Unconjugated |
Rabbit Anti-Human IgG Fc Antibody (A301077) | |
1mg/$205 | |
Description: | Rabbit anti-human IgG Fc secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Human |
Conjugate: | Unconjugated |
Goat Anti-Horse IgM Heavy Chain Antibody (A301009) | |
1mg/$205 | |
Description: | Goat anti-horse IgM heavy chain secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Horse |
Conjugate: | Unconjugated |
Rabbit Anti-Sheep IgA Heavy Chain Antibody (A294972) | |
1mg/$205 | |
Description: | Rabbit anti-sheep IgA heavy chain secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Sheep |
Conjugate: | Unconjugated |
Rabbit Anti-Deer IgG H&L Antibody (A295034) | |
1mg/$305 | |
Description: | Rabbit anti-deer IgG H&L secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Deer |
Conjugate: | Unconjugated |
Goat Anti-Human Kappa Free Light Chain Antibody (A301136) | |
1mg/$290 | |
Description: | Goat anti-human kappa free light chain secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Human |
Conjugate: | Unconjugated |
Rabbit Anti-Mouse IgG H&L Antibody (A301449) | |
1mg/$160 | |
Description: | Rabbit anti-mouse IgG H&L secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Mouse |
Conjugate: | Unconjugated |
Goat Anti-Mouse Kappa Light Chain Antibody (A301454) | |
1mg/$295 | |
Description: | Goat anti-mouse kappa light chain secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Mouse |
Conjugate: | Unconjugated |
Goat Anti-Mouse IgG2a Antibody, Cross-Adsorbed (A301551) | |
500µg/$295 | |
Description: | Goat anti-mouse IgG2a secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Mouse |
Conjugate: | Unconjugated |
Goat Anti-Bovine IgG H&L Antibody (A115760) | |
10mg/$430 | |
Description: | Goat anti-Bovine IgG H&L secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Bovine |
Conjugate: | Unconjugated |
Goat Anti-Dog IgG H&L Antibody (A115804) | |
10mg/$430 | |
Description: | Goat anti-Dog IgG H&L secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Canine |
Conjugate: | Unconjugated |
Goat Anti-Human IgA Fc Antibody (A115918) | |
10mg/$505 | |
Description: | Goat anti-Human IgA Fc secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Human |
Conjugate: | Unconjugated |
Goat Anti-Mouse IgG1 + IgG2a + IgG2b + IgG3 H&L Antibody (A116022) | |
10mg/$430 | |
Description: | Goat anti-Mouse IgG1 + IgG2a + IgG2b + IgG3 H&L secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Mouse |
Conjugate: | Unconjugated |
Goat Anti-Mouse IgM Fc Antibody (A116085) | |
10mg/$635 | |
Description: | Goat anti-Mouse IgM Fc secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Mouse |
Conjugate: | Unconjugated |
Rabbit Anti-Hamster IgG H&L Antibody (A117017) | |
10mg/$430 | |
Description: | Rabbit anti-Hamster IgG H&L secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Hamster |
Conjugate: | Unconjugated |
Rabbit Anti-Mouse IgG1 + IgG2a + IgG2b + IgG3 + IgA + IgM H&L Antibody (A117134) | |
10mg/$635 | |
Description: | Rabbit anti-Mouse IgG1 + IgG2a + IgG2b + IgG3 + IgA + IgM H&L secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Mouse |
Conjugate: | Unconjugated |
Rabbit Anti-Sheep IgM Fc Antibody (A117252) | |
10mg/$635 | |
Description: | Rabbit anti-Sheep IgM Fc secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Sheep |
Conjugate: | Unconjugated |
Goat Anti-Human Lambda Light Chain Antibody (A117367) | |
10mg/$635 | |
Description: | Goat anti-Human Lambda Light Chain secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Human |
Conjugate: | Unconjugated |
Porcine Anti-Human IgA Fc Antibody (A117412) | |
10mg/$430 | |
Description: | Porcine anti-Human IgA Fc secondary antibody. |
Applications: | IF, ELISA, Dot, WB |
Reactivity: | Human |
Conjugate: | Unconjugated |
Anti-Mouse Lambda + Kappa Light Chain Antibody [MT24 + MTJC5-1] (A269834) | |
250µg - 1mg/$265 – $815 | |
Description: | Rat oligoclonal [MT24 + MTJC5-1] antibody to Mouse Lambda + Kappa Light Chain. |
Applications: | ELISpot, FluoroSpot |
Reactivity: | Mouse |
Conjugate: | Unconjugated |
Goat Anti-Cat IgG Fc Antibody (A282908) | |
1mg/$250 | |
Description: | Goat anti-cat IgG Fc secondary antibody. |
Applications: | ELISA, Immunodiffusion |
Reactivity: | Feline, Iberian Lynx, Rabbit |
Conjugate: | Unconjugated |
Goat Anti-Pig IgA Antibody (A294476) | |
1mg/$205 | |
Description: | Goat anti-pig IgA secondary antibody. |
Applications: | WB, IHC, ICC, ELISA |
Reactivity: | Pig |
Conjugate: | Unconjugated |
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