Trial size antibodies for flexible, low-risk research
At St John’s Laboratory, we offer trial sizes of antibodies available for more than 13,000 products targeting over 8,000 proteins. These include monoclonal antibodies, recombinant antibodies, and secondary antibodies—designed for researchers who want to test performance before committing to larger quantities.
Most primary antibodies in our store are already well-characterised and performance-tested for a number of suitable laboratory applications. However, for customers who are also be interested in novel applications or untested models, our trial size antibodies offer additional flexibility in your research approach. We welcome purchases of trial size antibodies for Western Blot (WB), Immunohistochemistry (IHC), Immunofluorescence (IF), Immunoprecipitation (IP), Flow Cytometry (FC), and ELISA applications.
Driving innovation through antibody validation
We are committed to advancing scientific research, with a strong focus on antibody validation. In 2014, we co-organised the 1st International Antibody Validation Forum with academic and industry experts at Queen Mary University of London. This initiative was a milestone in setting global standards for antibody quality and transparency.
Try before you buy: supporting your experimental workflows
While our primary antibodies are well-characterised and validated across a variety of laboratory applications, we understand that research workflows can be unique. That’s why we offer trial size antibody samples, allowing scientists to evaluate performance in their own systems—before scaling up, which is especially when exploring new targets or model systems.
The Antibody Validation Project (AVP)
As part of our commitment to quality and accessibility, we launched the Antibody Validation Project (AVP). This initiative enables customers to access trial size antibodies—typically between 10µl and 20µl, at concentrations starting from ~1mg/mL—for a fraction of the cost of full-sized products.
Look for the AVP logo on eligible products to take advantage of this program. These compact antibody vials help minimise upfront investment, especially when exploring new targets or testing new experimental workflows.
Boost confidence in early-stage testing
By providing small-scale antibody samples, we encourage data transparency and early-stage testing. This promotes better decision-making, early identification of any performance concerns, and ultimately results in higher-quality research outcomes.
Peace of mind for risk-conscious researchers
We stand behind the reliability of our validated antibodies. That’s why we offer a 100% money-back guarantee if your primary antibody doesn’t perform as described. Using trial size antibodies from St. John's Laboratory, you can evaluate product suitability confidently and cost-effectively—without risk.
Learning and Support
