Biochemical assays measure how compounds bind to or modulate the activity of targets, such as enzymes, receptors, or proteins. They are used in drug discovery to identify compounds that interact with the target, known as hits, which may show potential as therapeutic drugs.

View our complete hit identification services

What is a biochemical assay & how is it used in drug discovery?

Biochemical assays are typically the first screening step in hit identification. They can be used in a large variety of high-throughput screening (HTS) formats to rapidly test thousands of compounds, measuring the binding of the compound to the targeted molecule or the modulation of target activity.

Why choose Evotec as your CRO for Biochemical Assay Services?

Working with Evotec means collaborating with our team of expert scientists, access to advanced technology platforms, and a project tailored to your needs (Figure 1). 

Infographic titled "Why choose Evotec?" displaying four key value propositions in rounded banner shapes. Top banner (dark blue): "Automated Platforms" with robotic arm icon - €12 million invested in 10 automated HTS systems. Second banner (pale pink, right-aligned): "HTS Expertise" with brain and gears icon - Over 25 years of experience across enzyme classes, receptor types, and difficult-to-assay targets. Third banner (light blue, left-aligned): "Compound Library" with test tube rack icon - 850,000 compounds curated for chemical tractability. Bottom banner (pale pink, right-aligned): "Project Flexibility" with puzzle piece icon - Standalone or integrated projects to meet your needs.

Figure 1. Key differentiators of using Evotec's biochemical assay platform 

Automated Platforms

Evotec has developed one of the most advanced technology platforms in the world, with over €12 million invested in the last 5 years to build 10 fully automated HTS platforms, supporting the biochemical assay development and detection methods tailored to each target.

HTS Expertise

With over 25 years of experience in high-throughput screening, we've built deep expertise across enzyme classes, receptor types, and difficult-to-assay targets. We have developed over 1,500 tailored assays across 750+ screening campaigns, building expertise in assay optimization. 

Compound Library

Our >850,000 compound library is carefully curated for chemical tractability and drug-likeness, differentiating it for its quality, diversity, and novelty. 

Project Flexibility

Biochemical assays open the door to hit identification, and the right partnership can determine the success of a project. Our scientist-to-scientist collaboration means strategic guidance throughout your project. 

We also offer flexible partnership options. Choose standalone biochemical screening or fully integrated drug discovery programs. We adapt our approach to your project needs and timelines.

Evotec’s Proven Biochemical Assay Development Process

At Evotec, we understand the importance of robust biochemical assay development to reliably determine the binding site of a compound, and/or activity in vitro. To ensure robust assay development, parameters such as accuracy, sensitivity, specificity, reproducibility, and interference are assessed.

How do we guarantee robust biochemical assay development?

Target-Specific Optimization

Each biochemical assay is built around your target’s biology. For example, enzyme assays require optimized substrate concentrations, incubation times, and enzyme levels for sensitive activity measurements. 

Pilot Studies

Before large-scale screening, pilot studies validate assay performance by measuring accuracy, sensitivity, specificity, reproducibility, and interference of an assay. Focusing on these reduces the risk of false positives and negatives and ensures the assay produces robust data.

Tailored Detection Methods for Biochemical Screening

Detection methods for biochemical assays also vary depending on the target. At Evotec, we will work with you to choose and implement the method that fits the target biology. Our methods include catalytic, enzymatic, binding, covalent binding, and optical methods (Table 1).

Table 1. Detection methods and uses

Collaborate with Evotec’s Biochemical Assay Experts

Robust biochemical assay development fast-tracks the discovery of tractable hits. The right detection method, properly validated assays, and target-specific optimization determine whether your screening campaign succeeds.

Ready to start your project? Our assay development team will discuss the optimal approach for your target.

Dirk Winkler

Dirk Winkler

SVP Hit Identification - Drug Discovery Services

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Evotec has the right technologies & disease understanding to meet our partners' evolving needs: a comprehensive disease knowledge at the molecular level, cutting-edge technologies & platforms to translate this expertise into effective precision medicines.