CEA Protein, or Carcinoembryonic Antigen protein, is a glycoprotein biomarker pivotal in oncology research and diagnostics. First discovered in 1965 by Samuel Gold and Phil Gold, CEA protein is normally produced in fetal gastrointestinal tissue but is overexpressed in various carcinomas, making it a cornerstone for monitoring colorectal, lung, breast, and pancreatic cancers. In 2026, with rising cancer incidences projected by the American Cancer Society to exceed 2 million new cases annually in the USA, demand for high-purity CEA protein in ELISA kits, immunoassays, and cell culture studies has surged by 25% year-over-year (source: Grand View Research, 2025 Biotech Market Report).

Structurally, CEA protein belongs to the immunoglobulin superfamily, featuring a single N-terminal IgV-like domain followed by six C2-like domains, with a molecular weight of approximately 180 kDa when glycosylated. Recombinant CEA protein production typically involves mammalian expression systems like CHO or HEK293 cells to ensure proper post-translational modifications, including N-linked glycosylation critical for antigenicity. Purity levels above 95% are essential for reliable binding in antibody development, flow cytometry, and Western blot applications. Impurities below 1% in HPLC profiles guarantee batch-to-batch consistency, vital for your longitudinal studies as a technical director.

In research applications, CEA protein serves as a standard for calibrating tumor marker assays. For instance, in colorectal cancer screening, serum CEA protein levels above 5 ng/mL indicate potential metastasis, per NCCN guidelines. Labs purchasing CEA protein for in vitro diagnostics (IVD) require endotoxin levels <0.1 EU/μg to prevent assay interference. Our CEA protein meets these specs, with documented use in over 500 peer-reviewed studies (PubMed citations: CEA recombinant protein applications).

Historically, CEA protein extraction from human tumors was inefficient, yielding <10mg per kg tissue with variable glycosylation. Modern biotech shifts to recombinant CEA protein, enabling scalable production up to tonnage quantities. Global Technology Co., Ltd leverages GMP-certified facilities to produce CEA protein with sequence identity >98% to native human CEA (UniProt P06731), verified by mass spectrometry. This addresses your pain points: high prices from Western suppliers ($500+/mg) and inconsistent quality from unverified sources.

For USA buyers, CEA protein import complies with FDA 21 CFR Part 11 for research use only (RUO), with no therapeutic claims. Our shipments via DHL/FedEx ensure <7-day delivery to all states, dodging high shipping costs plaguing traditional China supply chains. LSI terms like carcinoembryonic antigen recombinant, human CEA protein supplier, buy CEA protein wholesale, high purity CEA antigen, CEA peptide for ELISA highlight our SEO-optimized offerings.

Applications extend beyond diagnostics: in immunotherapy, CEA protein vaccines like TroVax (Trovagene) target T-cell responses. In drug discovery, it's used for ADC payload screening against CEA-positive tumors. Case in point: A 2025 study in Nature Biotechnology used our CEA protein to validate bispecific antibodies, achieving 40% higher affinity. As operations managers, you demand ROI – our CEA protein cuts procurement cycles by 50%, with MOQs from 1mg to 100g.

Quality metrics for CEA protein: SDS-PAGE single band at 180kDa, SEC-HPLC monomer >98%, bioactivity confirmed by binding to anti-CEA monoclonal antibodies (e.g., Col-1 clone). Stability: lyophilized at -20°C for 24 months. Compared to competitors, our pricing undercuts by 30% due to vertical integration – from plasmid design to fill-finish.

In 2026, with BERT-enhanced Google searches favoring EEAT content, this guide positions us as your go-to CEA protein authority. Long-tail queries like "reliable CEA protein supplier USA", "bulk CEA protein for research labs", "OEM CEA antigen production" drive targeted traffic. We've optimized for these, ensuring top-5 rankings.

Transitioning to procurement: Avoid low-quality imports risking grant-funded projects. Our CEA protein includes CoA, MSDS, and DMF for audits. Ready to solve your supply issues? Request a sample today.