Custom Bio-Reagents to Accelerate Life Science Research

GenScript serves academic research laboratories at top institutions throughout the world to accelerate research in basic life sciences and biomedicine. GenScript offers efficient and cost-effective services yielding superior quality custom bio-reagents including DNA constructs, Peptides, Purified Proteins, Antibodies, and Cell Lines.
We know that your experiments and grant deadlines can't wait, and that your time is better spent generating data and engaging in scholarly pursuits rather than repeating routine protocols to produce all the reagents you need. The best evidence that our services add value to science research programs is the growing list of peer-reviewed publications that make GenScript the most cited biotech company in the world. Join your colleagues who rely upon GenScript's deep technical expertise, breadth of scope, and economies of scale–so that you can focus on the experiments that matter most.
Our scientific team has accrued a total of over 1,000 years of industrial experience in bio-reagent services, and boasts a track record of delivering over 90% of all orders on time. Partnering with GenScript will not only reduce the time you spend on routine tasks and troubleshooting, but offers the highest possible quality and timeliness–and the industry's best guarantees.
— Largest Gene Synthesis Supplier in the U.S.
GenScript provides a comprehensive repertoire of molecular biology services, ranging from gene cloning and characterization to advanced genetic engineering and mutant libraries. We have delivered over one hundred thousand synthetic genes and constructs with the most complex and difficult traits through our Gene-on-Demand de novo synthesis platform. Our proprietary GenBuilder™ seamless cloning technology is capable of placing any gene in any vector independent of restriction and ligation, seamlessly. Our CLONEARCH™ clone storage and management system provides our customers with worry-free clone storage and a portal to construct manipulation, simply one-click away. Learn More »
- Gene Synthesis
- GenPlus Next-Gen Gene Synthesis – High-Volume
- Express Gene Synthesis – Fastest Turnaround
- CloneEZ™ Next-Generation Molecular Cloning
- Mutagenesis & Variant Libraries
— Your Reliable Source for Functional Proteins
GenScript's protein team has extensive experience in codon optimization, protein refolding, solubility enhancement, and activity preservation in multiple expression systems. We have delivered over 10,000 batches of soluble and active proteins for assay development, compound screening, antigen generation, structural analysis, and many other drug discovery applications. Some of these orders are at scale of gram quantities or greater. Learn More »
- Mammalian Expression System
- Large-scale Protein Production Service
- Protein Expression and Purification
— PepPower™ Technology Ensures Delivery and Quality
GenScript's proprietary PepPower™ platform provides custom peptides of up to 200 residues in length and a capacity of 10,000 peptides synthesized per month. With a scale ranging from milligrams to kilograms, comprehensive labeling and modification options, and high-throughput peptide library and array services, this platform is the ideal choice for peptide synthesis, peptide library and peptide array services. GenScript also offers a large-scale peptide production service. Learn More »
— Best Guarantees in the Industry
GenScript provides one-stop solutions to all of your antibody needs. You can simply start your project by submitting the accession number or sequence of your desired gene. For polyclonal antibodies, the PolyExpress™ protein immunization packages carry industry-leading guarantees of WB- and IP-positives against any target protein with a 1:128,000 ELISA titer. For custom polyclonal antibodies, whether your application is WB, IF/flow cytometry, IHC, ICC, IP/ChIP, Sandwich ELISA, or functional assays, we guarantee that at least one clone will work in your experimental system. All this is made possible by our proprietary OptimumAntigen design tool, T-Max adjuvant, and cutting-edge nanotechnology. Learn More »
— Custom Solutions for Stable Expression
With state-of-the-art facilities and seasoned industry experience, GenScript offers quality services for generating and evaluating primary clones for productivity and adaptability in serum-free suspension culture, identifying cell lines for stable, long-term production and scalability, and for developing large-scale purification and analytical processes. We also provide assay-ready frozen cells, preserving your time for high-value projects. Learn More »
Quotations and Ordering

- Orders can be placed by phone, email, fax, or online with a formal PO (Purchase Order) or credit card. We recommend that you submit your service requests and orders via our secure online ordering system.
- For questions and quotation requests, please use our secure web server. Our customer service representatives are available 24 hours, Monday through Friday to assist you. However, you may also contact us by email, phone, or fax.