BellBrook Labs

BellBrook Labs is a Madison, Wisconsin-based provider of innovative biochemical assay platforms and contract research services for the drug discovery sector. The company's core technologies, Transcreener and AptaFluor, offer universal, mix-and-read detection methods for nucleotide- and methyltransferase-dependent enzymes, enabling robust high-throughput screening. With over 20 years of enzymology expertise, BellBrook positions itself as a critical partner for organizations seeking to de-risk and accelerate early-stage discovery programs, particularly for challenging targets in oncology, immunology, and neurodegeneration. The company operates on a product and services business model, generating revenue from the sale of assay kits, reagents, and custom research projects.

Proprietary fluorescence-based assay platforms including Transcreener (universal nucleotide detection for kinases, GTPases, ATPases, etc.) and AptaFluor (methyltransferase detection). Platforms enable mix-and-read, high-throughput biochemical assays.

BellBrook competes with large diversified suppliers like Revvity and Thermo Fisher, as well as specialized assay kit firms and full-service CROs. Its differentiation lies in its deep enzymology expertise, scientist-led support, and proprietary universal platforms (Transcreener/AptaFluor) for challenging targets.