Proteintech : What antibodies and proteins recombinantes for life science analysiss?

Since 2002, Proteintech has designed and manufactured in-house primary antibodies, secondary antibodies, ChromoTek nanobodies and HumanKine recombinant proteins. A go-to for academic labs, biotech and pharma, the brand stands out for endogenous and KO validation, lot-to-lot consistency and transparent datasheets. For your Western blot, immunofluorescence, IHC, IP or flow cytometry applications, Dutscher brings Proteintech expertise within reach for reliable results, from screening through to validation.

Independent manufacturer since 2002

Founded in 2002 in Chicago by researchers, Proteintech was born from a simple insight: reproducibility depends on reliable antibodies and transparent data. By choosing to remain the original manufacturer - from immunogen design through production and in-house quality control - the brand has built a coherent, long-term offering. It established an early presence in Europe (Manchester) and across Asia to support laboratories locally. In 2020, the integration of ChromoTek (nanobodies and GFP/RFP-Traps) expanded the portfolio, while HumanKine cytokines and growth factors expressed in human cells have become the benchmark for demanding cell culture. Backed by quality certifications and thousands of citations, its growth continues to be guided by a cardinal value: the trust of scientists.

Expertise and areas of specialisation

The Proteintech expertise starts with primary antibodies raised against relevant immunogens (often full length) and validated on endogenous expression, via KO/siRNA and across multiple applications: Western blot, IHC (including FFPE), IF, IP, flow cytometry. The aim is clear: specific, reproducible signals that transfer from one technique to another. Secondary antibodies and conjugates are built on CoraLite fluorophores with a high signal-to-noise ratio, including in the near-infrared, for clean, long-lasting multiplexing. On the nanobodies side, the integration of ChromoTek brings benchmark tools: GFP-Trap, RFP-Trap and other Tag-Trap for ultra-clean IP/pull-down, as well as probes and binders for imaging and cell biology. For culture and differentiation, HumanKine proteins (cytokines, growth factors) expressed in human cells provide native conformation and glycosylation, with controlled endotoxin levels — an asset for immunology, stem cells and oncology. The range is completed by ELISA kits, controls and labelling reagents to align detection and quantification. Beyond the catalogue, the brand stands out with rich datasheets, lot-to-lot consistency linked to integrated manufacturing, and responsive scientific support. This combination of tools and methodology makes it a trusted choice for academic research, biopharma R&D and quality control laboratories when data must be robust from the first run.

Proteintech products supplied by Dutscher

Cell culture

Frequently asked questions about the Proteintech brand

Where are Proteintech products designed and manufactured?
The brand remains an original manufacturer: design, production and quality control are carried out in-house, with dedicated sites and teams in the United States, Europe and Asia.

Are HumanKine proteins suitable for demanding cell culture?
Yes. Expressed in human cells, they provide native conformation/glycosylation and low endotoxin levels—ideal for stem cell work, immunology and oncology.

Which quality certifications are available?
Proteintech operates under recognised quality standards (e.g. ISO 9001 and, for certain ranges, ISO 13485), underpinning lot-to-lot consistency and traceability.