Spend more, Save more

The Spend More, Save More is back in 2023




The spend more, save more promotion is back with an opportunity to save up to $700 on all Proteintech products. Mix and match your favorite Proteintech, ChromoTek & HumanKine products.













Use code: SPENDSAVE23

Offer ends Oct. 31, 2023. Only valid in the US & Canada.

The promotion is valid on Proteintech's full product range, including:

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Primary Antibodies

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

Secondary Antibodies

Secondary antibodies conjugated to a variety of detection molecules such as HRP, biotin, and fluorescent dyes.​

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.


Sandwich ELISA Kits with pre-coated plates, assay reagents, and protein standard.​

IHC Kits

Optimized IHC kits that include ready-to-use reagents, including primary antibody.​

Cell Health & Proliferation Kits​

Kits for the measurement of cellular functions like proliferation and apoptosis

Magnetic Cell Separation Systems​

Beads, Antibodies, and kits for positive and negative magnetic separation of cells.

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


Nano-Traps are ideal for fast, reliable and efficient one-step immunoprecipitation and co-immunoprecipitation. Nano-Traps comprise of Nanobodies conjugated to beads.

Nano-Secondary reagents

Nano-Secondary® reagents use a novel class of secondary antibodies for higher resolution & cleaner images. These reagents consist of Nanobodies conjugated to fluorescent dyes binding to conventional antibodies.


Chromobodies® are fluorescent nanoprobes for real-time and live-cell imaging of intracellular endogenous proteins. Chromobodies are Nanobodies that are genetically fused to a fluorescent protein such as GFP.

Nano-Booster &

ChromoTek's Nano-Boosters & Nano-Labels are very small fluorescent probes optimzed for confocal and super-resolution microscopy. They consist of Nanobodies conjugated to fluorescent dyes.


Nano-Caps® are optimized for effective and cost-efficient protein purification. Nano-Caps consist of Nanobodies conjugated to agarose.


Nano-CaptureLigands are optimized to specifically immobilize human, mouse, and rabbit antibodies to streptavidin/avidin. Nano-CaptureLigands are biotinylated Nanobodies.


Suitable for conjugation to dyes, biotin, beads, surfaces etc. via NHS ester reaction.

Spot-Tag System

ChromoTek's proprietary peptide-tag system for immunoprecipitation, immunofluorescence, and protein purification. Depending on application, Spot Nanobodies are conjugated to agarose, beads, or fluorescent dyes.

Protein Ladders

Regular and broad range prestained protein markers available.

SignalBright Chemiluminescent Substrate

Highly sensitive chemiluminescent substrates: SignalBright Pro, SignalBright Plus, and SignalBright Max.

Fixation and Permeabilization

Optimized fixation and permeabilization reagents for reproducible results.

Phantom Viability Dyes

Fixable viability dyes available in 7 different excitation / emission ranges.

If you need assistance with ordering or have any questions relating to our products or services, please contact us or speak to a Proteintech representative via our 24-hour Live Chat.* A single product in this category must not exceed $500 to qualify.

Excluded from promotion:

• HumanKine GMP (all sizes/products)

• HumanKine RUO 100ug and above

• ChromoTek® Products above $500

Terms and conditions

  1. This promotional offer is only available to customers based in the U.S and Canada through Oct. 31, 2023. 
  2. Only one tier of discount ($100, $225, $350, or $700) is applicable to each order, depending on the subtotal order value. If the total order value exceeds $2,300, the maximum discount available remains $700. 
  3. Order value must reach the minimum spend of a given tier in order to receive its associated discount.
  4. This promotion may be applied to all products except the following: All GMP grade proteins. All HumanKine products above 10ug. All ChromoTek® products exceeding $500. i.e. Nano-Traps, ChromoBodies, Nano-Boosters & Labels, Nano-Caps, Nano-CaptureLigands, Nano-Secondary Reagents, VHH/Nanobodies, Spot system products, and accessory products. 
  5. This promotion cannot be used in conjunction with any other offers or discounts.
  6. The promotion code SPENDSAVE23 must be entered at checkout or quoted on your email/fax order to be applied. We cannot apply the promotion retroactively. 
  7. Available for direct orders only. 
  8. Shipping costs still apply. 
  9. Proteintech reserves the right to cancel or refuse this promotion at any time.
  10. 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.