Buy 2, Get 1 Free

Tis' the season to stock up and save on essentials!

Offer ends December 31st, 2023.

Use promo code: DEC23B2G1

Valid in US and Canada*
The promotion is valid on selected Proteintech product range:

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Primary Antibodies

Primary antibodies against over 13,000 different protein targets including 3,000 antibodies with KD/KO validation.

Conjugated Antibodies for Immunofluorescence

Primary antibodies conjugated to a variety of fluorescent dyes for use in immunofluorescent staining.

Conjugated Antibodies for Flow Cytometry

Primary antibodies conjugated to a variety of fluorescent dyes for use in flow cytometry.

Neutralizing Antibodies

Neutralizing antibodies and control antibodies for use in neutralization assays.

Epitope Tag & Loading Control Antibodies

Evaluate the changes in expression levels of target proteins.​

Isotype Control

Distinguish between specific antibody staining and background staining in your experiments to ensure reliable results.

HumanKine® recombinant proteins are created in HEK293 cells using animal free components

Proteins co-expressed in bacteria will not possess post- translational modifications, e.g., phosphorylation or glycosylation. For activity, many proteins require glycosylation and processing available exclusively in eukaryotic systems; specifically human systems for authentic human proteins.

All Humankine® recombinant proteins are produced in Proteintech's in-house cGMP grade laboratory adhering to strict quality control regulations.

  • Authentic human proteins

  • Native human conformation & post-translational modifications

  • High bioactivity & stability

  • Seamless transition from research to cGMP



Terms and conditions

  • This promotion is only available to customers based in the USA and Canada.
  • This promotion is only valid between 12/01/23 – 12/31/23.
  • Use promo code DEC23B2G1 to receive discount on qualifying orders.
  • Minimum order of 2 full-size primary antibodies or 10ug HumanKine® proteins for the promotion to be applied.
  • Maximum of 3 free antibodies or HumanKine® proteins per transaction, regardless of the number of antibodies or proteins purchased.
  • The item(s) of the lowest value will be selected as the free product.
  • ChromoTek® and GMP products are excluded from this promotion.
  • Usual shipping costs will still apply.
  • Discount cannot be applied retroactively for orders placed prior to December 1st.
  • This promotion is only available to end-users. Distributors and resellers are not included.
  • This promotion cannot be used in conjunction with any other offers or discounts.
  • The promotion code must be entered at checkout or quoted on your email/fax order to be applied to your order.
  • Proteintech reserves the right to cancel or refuse this promotion at any time.
  • Personal data captured during this promotion will be processed in accordance with applicable data protection regulations and Proteintech’s privacy policy. You will be able to, at any time, modify, update, or remove personal data by writing to / emailing Proteintech.