AlpinaBioTech

Empowering Precision Diagnostics

Bringing ImmunoGuide ELISA technologies to Europe and beyond

Validated ELISA kits for therapeutic drug monitoring and anti-drug antibody detection, for clinical labs, research institutions, and biotech teams. For Research Use Only.

Bringing ImmunoGuide ELISA technologies to Europe and beyond

From our journal

Background on ELISA methods, therapeutic drug monitoring, anti-drug antibodies, and assay validation.

All articles
Schematic figure illustrating: Multiplex Luminex Assay Enables Simultaneous Domain-Specific ADA Detection for Multidomain Biotherapeutics

Multiplex Luminex Assay Enables Simultaneous Domain-Specific ADA Detection for Multidomain Biotherapeutics

Standard bridging immunogenicity assays cannot distinguish which domain of a multidomain biotherapeutic is driving an anti-drug antibody response. A Luminex bead-based multiplex approach published in Bioanalysis in November 2026 addresses this gap by enabling simultaneous, domain-resolved ADA detection within a single assay well, with sub-100 ng/mL sensitivity and no prozone effects up to 20,000 ng/mL. This article reviews the method, its validation considerations, and what it means for scientists building immunogenicity programs for bispecific antibodies and other multidomain drugs.

Schematic figure illustrating: Pembrolizumab Biosimilars Are Entering Clinical Review: What the PK-Only Pathway Means for Immunogenicity Assay Scientists

Pembrolizumab Biosimilars Are Entering Clinical Review: What the PK-Only Pathway Means for Immunogenicity Assay Scientists

The FDA accepted the first publicly announced pembrolizumab biosimilar BLA for review in October 2026, using a pharmacokinetic-only pivotal strategy that skips a comparative Phase 3 efficacy trial. For immunogenicity assay scientists, this regulatory pivot reframes how ADA comparability must be designed, validated, and interpreted in a drug class with low but clinically consequential reference product immunogenicity.

Schematic figure illustrating: When PK and ADA Assays Become the Whole Argument: Biosimilar Regulatory Reform and What It Demands from Bioanalytical Scientists

When PK and ADA Assays Become the Whole Argument: Biosimilar Regulatory Reform and What It Demands from Bioanalytical Scientists

Regulatory agencies in the US, EU, and Canada moved in 2025 and 2026 to reduce or eliminate comparative efficacy studies for biosimilar approval, placing pharmacokinetic and anti-drug antibody assays at the center of the evidentiary dossier. This article examines the three converging guidance documents, the validation demands they create, and the platform-level design principles scientists need to build biosimilar bioanalytical programs that can carry that evidentiary weight.

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