Proteintech Group — Antibodies, Proteins & Life Science Reagents

What Proteintech Gets Right That Other Antibody Brands Don't

Most antibody suppliers aggregate products from contract manufacturers, which creates variability between lots and limited accountability when a product fails. Proteintech's model is different: every antibody is produced and validated in their own facilities, with the resulting data published openly on each product page.

Key differentiators:

End-to-end in-house manufacturing. Proteintech does not outsource production. Every antibody is raised, purified, and validated internally, which translates directly into tighter lot-to-lot consistency and more reliable experimental outcomes.

Broadest KO/KD-validated antibody portfolio. Over 4,000 targets have been confirmed by knockdown or knockout validation — the most comprehensive coverage of this kind in the antibody industry. For researchers who need to rule out non-specific banding, this is a decisive advantage.

400,000+ independent citations. The citation volume across peer-reviewed publications provides a level of independent quality verification that no internal test can replicate. It also means published protocols exist for most catalog items, shortening method development time.

The Proteintech Performance Guarantee. If an antibody fails to perform in any species or application — including those not listed on the datasheet — Proteintech offers a hassle-free refund or credit note. No negotiation required.

ISO 13485 and ISO 9001:2015 accreditation. Both certifications are maintained across Proteintech's production sites, making their products eligible for quality-sensitive workflows including GMP biomanufacturing.

Proteintech's Full Product Range: From Standard Antibodies to GMP-Grade Proteins

Proteintech's catalog spans the core needs of most life science research workflows, with specialist lines for advanced applications.

Primary Antibodies cover over 13,500 targets in polyclonal, monoclonal, and recombinant formats. The recombinant Unirab line, built on the ABCE platform, now includes more than 10,000 products. CoraLite®-conjugated primary antibodies enable direct multiplex detection in immunofluorescence and flow cytometry without the need for secondary antibodies.

ELISA Kits are available for a wide range of protein targets, with sandwich ELISA formats validated for human, mouse, and rat samples. Each kit is manufactured to match the same quality standards as Proteintech's antibody line.

Cytokines and Growth Factors (HumanKine®) are expressed in human HEK293 cells using animal-free components, producing bioactive proteins with high specific activity. The HumanKine range is available from research-use-only (RUO) through to cGMP grade, supporting both discovery research and biomanufacturing applications.

ChromoTek Nanobody-Based Reagents offer performance advantages over conventional IgG antibodies in applications where background signal, resolution, or tissue penetration are limiting factors. Product families include GFP-Trap®, Nano-Traps, Nano-Secondary® antibodies, Chromobodies®, and the Spot-Tag® system.

Secondary Antibodies and Supporting Reagents include HRP-conjugated, fluorescent dye-conjugated, and CoraLite-labeled options, as well as prestained protein markers and western blot buffer systems.

Custom Antibody Services cover the full development pipeline: antigen design and synthesis, immunization, screening, large-scale production, characterization, and conjugation.

ChromoTek, HumanKine & Proteintech Genomics: Understanding the Brand Family

Purchasing teams and PIs who encounter ChromoTek or HumanKine product names separately should be aware these are part of the Proteintech Group family.

ChromoTek was acquired by Proteintech in 2020. Originally a spin-off from Ludwig Maximilian University of Munich, ChromoTek pioneered the development of camelid single-domain antibodies (VHH nanobodies) for research use. Its flagship GFP-Trap® product is referenced in more than 1,700 scientific publications and remains the gold standard for immunoprecipitation of GFP-fusion proteins. All ChromoTek products are now fully integrated into the Proteintech catalog at ptglab.com.

HumanKine® is Proteintech's dedicated cytokine and growth factor brand. Unlike bacterially expressed alternatives, HumanKine proteins are produced in human cells without animal-derived components, delivering authentic post-translational modifications and superior bioactivity. The line includes the largest commercially available portfolio of GMP-grade cytokines and growth factors, in stock and ready to ship.

Proteintech Genomics was established as a subsidiary in 2022, based in San Diego. It focuses on the development of highly multiplexed proteomic assays for single-cell and spatial multiomics workflows, leveraging Proteintech Group's antibody portfolio to enable next-generation multi-omic analysis.

Frequently Ordered Proteintech Catalog Numbers

The table below covers Proteintech's most widely cited and reordered products. These represent common starting points for new lab accounts and high-volume repeat orders.

Catalog availability and specifications are subject to change. Contact Iright for current stock status and bulk pricing.

Proteintech Antibodies Cover These Research Applications

Proteintech products are validated and widely used across the following experimental platforms:

Western Blot (WB) · Immunohistochemistry (IHC) · Immunofluorescence / ICC · Flow Cytometry · ELISA · Immunoprecipitation (IP) · Co-Immunoprecipitation · ChIP & RIP · Live Cell Imaging · Super-Resolution Microscopy · Mass Spectrometry · Single-Cell Multiomics · Protein Purification

Research areas with strong Proteintech catalog depth include: cancer biology, neuroscience, autophagy and cell death, cardiovascular disease, epigenetics, immunology, metabolic disease, developmental biology, and COVID-19-related targets.

Frequently Asked Questions

1. What distinguishes Proteintech from other major antibody suppliers like Abcam or CST?

The primary distinction is manufacturing model. Proteintech produces all products in-house rather than licensing or aggregating from third parties, which gives it direct control over quality and lot consistency. Its citation database also provides an unusually deep layer of independent performance evidence. CST similarly manufactures in-house and is a strong competitor, particularly in signaling pathways. Abcam operates a hybrid model. The choice often comes down to target coverage and specific application data available on the product page.

2. Does Proteintech offer a satisfaction guarantee on its antibodies?

Yes. The Proteintech Performance Guarantee applies to all antibody products in any species or application, whether or not that combination is listed on the datasheet. If the antibody fails to perform as expected, labs can request a refund or credit note directly. Iright can assist in coordinating guarantee claims for orders placed through us.

3. What is ChromoTek and can I order its products through Iright?

ChromoTek is a Proteintech Group subsidiary specializing in nanobody-based research reagents, including the GFP-Trap® immunoprecipitation system, Nano-Secondary® antibodies for super-resolution imaging, and Chromobodies® for live-cell visualization of endogenous proteins. All ChromoTek products are available through Iright as part of the Proteintech catalog.

4. Can Proteintech products be used in GMP or regulated manufacturing workflows?

Yes, for specific product lines. HumanKine® cytokines and growth factors are available in GMP grade and are produced at ISO 13485-accredited facilities. These are suitable for use in biomanufacturing and clinical research applications. Contact Iright with your specific product requirements and intended use for a tailored quotation.

5. How do I identify the right Proteintech antibody for my target and application?

The Proteintech website (ptglab.com) provides detailed datasheets for each catalog item, including validation images specific to the listed applications and species. The site also hosts Able, an AI assistant that helps researchers identify the most suitable antibody based on target, application, and species parameters. Iright's team can also assist with product selection for complex or high-stakes purchasing decisions.

6. What is Iright's role in the Proteintech supply chain?

Iright is an authorized international procurement partner for Proteintech products. We source directly through verified channels and offer advantages including competitive institutional pricing, consolidated invoicing across multiple brands, customs clearance coordination, and dedicated account support for labs in Asia-Pacific, MENA, and other international markets.

7. Can Iright handle bulk or recurring orders for Proteintech products?

Yes. For high-volume or recurring lab supply needs, Iright can arrange standing order pricing, scheduled deliveries, and consolidated billing. Reach out to our procurement team with your order profile for a customized arrangement.