Antibody Expression Services


Learn how we’ve optimized antibody expression and purification in a presentation from our CSO.

View the 180 antibody formats we’ve manufactured to date.

Our antibody expression platforms rapidly produce high-quality, animal-free recombinant antibodies at milligram-to-gram scale in HEK or CHO cells. Our serum-free mammalian transient expression system offers a faster, more affordable alternative to stable cell line generation, and we’ve used it to manufacture recombinant antibodies in any species, isotype or format with high purity and low endotoxin levels.

Depending on your antibody expression needs, we are a reliable outsourcing solution for antibody production, or a true consultative partner for developing the best possible engineered antibody. All production occurs at our ISO 9001:2015-certified manufacturing facility, which enables high-throughput capacity and the ability to scale up to multi-gram quantities within weeks.

We have experience manufacturing antibodies for clients worldwide, including pharmaceutical and biotechnology companies, diagnostic assay developers and academic researchers. We have produced more than 23,000 different recombinant antibodies, making 1,000 grams of protein in total and expanding our all-recombinant reagents catalog to more than 15,000 antibodies. As illustrated by our Periodic Table of Antibodies, we’ve manufactured more than 180 different antibody formats to date, including multispecific antibodies, fragments and Fc fusion proteins.

Our antibody expression services are all royalty-free and customizable to your needs. We can start from an electronic antibody sequence, hybridoma cell line or purified antibody protein. In addition, your project will be supported by scientific staff with deep expertise in antibody development, a dedicated project manager, and a global customer service team across North America, Europe and Asia.

Read about all our different antibody expression services below. To learn more, contact us or fill out the form to start a discussion about your project.


Our HEXpress™ service produces milligram-to-gram quantities of recombinant antibodies in HEK cells with high purity and low endotoxin levels. This service provides a faster, more affordable alternative to stable cell line generation, with proven expression of antibodies in any species, isotype or format.


Our CHXpress™ service enables serum-free mammalian transient expression in CHO cells to better serve clients through their full antibody development. This service is particularly useful for bridging the gap to stable CHO production, or for tackling challenging constructs.


Our FleXpress™ service allows clients to rapidly express large numbers of IgG antibodies at 80 ml scale using our proven recombinant antibody technology. This service is particularly useful for early-stage pilot studies on a group of therapeutic antibody candidates, as well as converting a monoclonal antibody portfolio from hybridomas to recombinant production.

Contact Us About Your Antibody Expression Project

Fill out the form below to start a conversation about your antibody expression needs. A sales representative will be in touch shortly to discuss details, review pricing and answer any questions.

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