Custom Reagents & Contract Services
When your research demands more than off-the-shelf reagents, you need more than a supplier - you need a partner in discovery. R&D Systems™ specializes in delivering custom high-quality proteins, antibodies, immunoassays, and small molecules to meet your exact specifications.
Whether you're isolating rare proteins or developing novel assays R&D Systems is more than just a reagent supplier. We stand ready to partner with you to create tailored solutions backed by decades of scientific expertise. From unique packaging formats and formulations to bespoke products, we combine the flexibility of a niche provider with the manufacturing, development and supply capabilities of a global leader.
Tailor Made Sizes and Formulations
Product
Engineering
Development
Services
Simply and efficiently get your proteins, antibodies, immunoassays, and small molecules in the amount and formulation you need.
- Size & Packaging Format
From micro-scale to bulk quantities, we offer flexible sizing and packaging to match your lab’s needs. - State & QC Specifications
Specify your preferred product state, liquid or lyophilized. Request enhanced QC criteria like low endotoxin, SEC-MAL, and additional bioactivity testing. - Concentration & Formulation
Specify the exact concentration and buffer composition your research requires, from salt levels and pH to stabilizers and excipients. We tailor formulations to optimize performance, compatibility, and reproducibility across your assays.
Accelerate your discovery with reagent modifications tailored to your specific needs, backed by decades of expertise in protein and antibody engineering.
- Monoclonal Antibody Panels for Immunoassay Development
Thousands of unique, non-catalog antibodies available to screen to find your ideal match. - Protein Tagging & Antibody Conjugation
Assess protein-protein interactions for drug discovery and cell characterization. With options for any experimental application, choose from biotin, HRP, epitope tags, and fluorescent labels. - Immunoassay Modifications
Bulk customization and panel optimization for ELISA kits and multiplex assays.
Your challenge drives our development. Our engineering and assay development experts collaborate with you to deliver precise, completely customized solutions.
- Protein Development & Antibody Engineering
Custom protein development and custom antibody engineering services, including recombinant conversion, de novo development, and other modifications. - Immunoassay Development Services
R&D Systems offers custom assay development and production services, including single analyte ELISA kits, multiplex assays, and Simple Plex™Assay services. - Product Grade Enhancements
Achieve regulatory compliance with options like Animal-Free manufacturing and dedicated
GMP-grade reagent production for therapeutic manufacturing. - Read our Custom Products Services FAQs
Scalable Reagent Supply
Lot Request & Reservation
Extra assurance for reproducible results. Request a lot you have used before or test multiple lots to find the right match.
Secure Your Supply
We will partner with you to establish secure, long-term access to your products with the exact specifications your research demands, minimizing procurement risks.
Why Partner with R&D Systems?
Tailored Solutions:
Products built to meet your unique research goals
Scientific Expertise:
Decades of validation and R&D leadership
Responsive Support:
Collaborative, consultative approach
Global Infrastructure:
Scalable capabilities with niche agility
Customer Success Stories
