Antibody Purification

CD BioSciences provides guaranteed label-free protein purification services (an important component of prokaryotic protein expression services). Antibody purification has the same sequence information as the natural protein, which is more conducive to protein crystallization experiments and protein function research.

Antibody purification method

• Protein A/G purification:

Protein A and Protein G are bacteria-derived proteins, which have different binding properties. Protein A/G purification is a relatively simple method for antibody purification. It has a wider binding range than Protein A or Protein G alone, which can bind to all human IgG subunits. However, because Protein A/G can only bind to Fc fragments and cannot specifically screen out a specific antibody, it is generally suitable for the purification of monoclonal antibodies.

• Antigen affinity purification:

Antigen affinity purification is a better method to separate specific polyclonal antibodies, which utilizes the specific interaction between antibody and antigen. The antigen protein will bind to the Fv fragment of IgG, so specific antibodies with high affinity antigen specificity can be accurately separated from the antibody impurities, so it is generally used for the purification of polyclonal antibodies and recombinant antibodies.

Overall Solutions

CD BioSciences provides antibody preparation, antibody purification and other-stop services, including gene sequencing, recombinant antibody expression, antibody purification to affinity determination.

At the same time, we have a variety of antibody purification equipment, providing antigen affinity purification, protein A purification, protein G purification and other methods to purify antibodies. You only need to provide the antibody or antiserum to be purified, and we will finally deliver at least >90% pure antibody.

Our Advantages

  • CD BioSciences has a first-class expert technical team: the team is professional and experienced, and we can provide you with professional antibody purification services.
  • Our research supervisor and project manager will complete your project on time through open communication channels and meet your requirements.
  • CD BioSciences has established a professional after-sales service team to provide customers with efficient, fast and practical solutions.

Our Service Items

Service Content Antibody purification method Product delivery mode Product delivery mode



Protein A/G purification

Antigen affinity purification


The antibody to be purified;

Antibody after purification;

experimental report;

SDS-PAGE&ELISA test report

Why choose us?

CD BioSciences provides professional antibody purifications to meet the needs of regular customers to determine hits on time and on budget. CD BioSciences relies on the world-class protein expression platform and technical expertise, we provide customers with the best quality one-stop Antibody purifications, including the development of experimental procedures according to different experimental needs. Please feel free to contact us for more detailed information, our scientists will tailor the most reasonable plan for your project.


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