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LC-MS Services

Intact Mass Analysis, Peptide Mapping, and Glycan Analysis for Biologics Drug Discovery and Optimization

WuXi Biologics CRO Services provides LC-MS services for comprehensive protein characterization in biologics drug discovery. Our LC-MS analysis platform supports Intact Mass analysis, peptide mapping analysis, disulfide mapping analysis, glycan analysis, and LC-MS protein quantification for PK studies to identify PTMs, sequence variants, and other critical quality attributes that impact protein quality, safety, and efficacy.

CORE STRENGTH

LC-MS Service Highlights:

Comprehensive Mass Spec Analysis

Support Intact Mass analysis, peptide and disulfide mapping services, N-glycan analysis, and in vitro & in vivo PK assessment

High-Quality Data Guiding Drug Discovery

Analyze molecular mass, PTMs, glycan profiles, and PK to support characterization and guide bsAb purification

High-Throughput and Routine Study Support

Flexible Mass Spec protein analysis for both rapid screening and deep characterization needs

Broad Modality Expertise​

Support mAbs, bispecific antibodies, ADCs, and other complex biologics across key discovery stages​


~150

LC-MS comprehensive projects annually (peptide mapping, PK, etc.)

~14,000

Molecules tested by LC-MS annually

~300

Early-stage developability assessments annually
Service Details

Detailed LC-MS Services​

 

01

Intact Mass Analysis

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  • Molecular weight confirmation (R/NR) with high-throughput options
  • IdeS digestion for N-glycan analysis
02

Peptide & Disulfide Mapping Analysis

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  • PTM identification and monitoring
  • Glycan analysis
  • Sequence variant analysis
  • Disulfide linkage with software & manual check
  • Free thiol content
03

Glycan Analysis

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  • N-glycan analysis by Intact Mass​
  • Releasing N-glycan analysis
  • N-glycan profiling by peptide mapping
04

PK Assessment

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  • In vitro: Average DAR, total antibody, PTMs
  • In vivo: Total antibody, average DAR
Case Studies

Case Studies: LC-MS Analysis for Biologics Drug Discovery and Characterization​

High-Throughput Intact Mass Analysis for Rapid Biologics Characterization

This case study highlights a high-throughput Intact Mass Spectrometry workflow for rapid protein characterization. Using flexible sample preparation, 2D UPLC with TOF-MS, and automated data acquisition and processing, it streamlines mass confirmation, heterogeneity assessment, and reporting in early drug discovery.

Peptide Mapping Analysis Reveals Modification Sites in CDR Regions
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This case study demonstrates how peptide mapping services can identify oxidation, dioxidation, and kynurenine hotspots in CDR regions under oxidative stress, supporting deeper PTM monitoring and early risk mitigation.

LC-MS/MS Protein Quantification of Total Antibody and Average DAR for ADC PK Assessment
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This case study demonstrates LC-MS/MS services for quantifying total antibody concentration and average DAR in biological samples. By integrating immunoprecipitation, digestion, and payload release, it supports measurement of total antibody, conjugated payload, and free payload for ADC PK assessment.

Why WuXi Biologics

Why Work with WuXi Biologics for LC-MS and LC-MS/MS Services

  • One-Stop LC-MS Support: Access Mass Spec services for protein characterization, quantification, and identification in one place
  • Early Molecular Insight: Uncover heterogeneity, PTMs, and sequence-related liabilities earlier to support better discovery decisions
  • Precise Analytical Data: Generate robust data to guide bsAb purification and lead optimization & selection with greater confidence
  • Fit-for-Purpose Workflow Design: Support both high-throughput LC-MS analysis and detailed Mass Spec protein analysis tailored to modality and project stage
Get Started

Move from LC-MS Data to Better Discovery Decisions

Advance your biologics drug discovery projects with our LC-MS services designed to deliver actionable molecular insights across key drug discovery stages. Spanning Intact Mass analysis, peptide mapping, glycan and disulfide analysis, and PK assessment, we help translate complex Mass Spectrometry analysis into better decisions for lead characterization and optimization.