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title: Sartorius_CP_BrandedContent_Feb2026_New_LandingPage
description: This eBook summarizes the use this fluidic-free instrument approach for a variety of CQA applications across the drug discovery and development workflow.
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eBook

From Cell Line to Lot Release: A Faster Approach to Biologic Quality Testing

### What’s Inside?

Biotherapeutic development depends on measuring critical quality attributes (CQAs) at every stage, from clone selection to final lot release. But traditional methods like ELISA and HPLC are slow, labor-intensive, and often ill-suited to the pace demands of modern bioprocessing. This compendium from Sartorius explores how label-free, automated biosensor technology is changing the way CDMOs and biopharma organizations approach analytical testing across the entire development workflow.

Whether you're screening thousands of clones for glycosylation profiles, detecting host cell protein contaminants, confirming potency before lot release, or running biosimilar comparability studies, this resource shows how one platform can replace — or significantly outperform — multiple conventional assays, often at a fraction of the time and hands-on labor.

Inside, you'll find application guidance and real-world data covering:

- Cell line development and titer screening, including simultaneous titer and glycan analysis on the same samples
- Impurity testing for host cell proteins and residual Protein A, with case study data from GlaxoSmithKline
- Concentration and potency determination, delivering results in ~60 minutes vs. 20+ hours for ELISA or HPLC
- Post-translational modification assessment, including glycosylation CQA monitoring for biosimilars
- EC50/IC50 studies and stability/aggregation testing with real-time functional data

### Send me the ebook!

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