Laboratory Execution System

A laboratory execution system (LES) is a category of software that runs an analytical procedure at the bench. It converts a written test method or SOP into a guided, step-by-step workflow, enforces the correct sequence, captures readings directly from instruments, and produces a defensible record of how the test was performed. An LES is most common in regulated QC and analytical labs, where the same methods run repeatedly and every result must withstand inspection. By guiding execution and capturing data as it is generated, an LES reduces transcription errors, shortens review, and makes data integrity part of the procedure itself.

A LIMS (laboratory information management system) is the system of record: it manages samples, schedules tests, and stores results. An LES (laboratory execution system) runs the procedure itself, guiding the analyst and capturing data at the point of work. An ELN (electronic lab notebook) documents experimental and R&D work in a flexible, free-form way. Many regulated labs run all three, with the LIMS tracking the sample, the LES executing the test and feeding results back, and the ELN capturing research. Because the systems overlap at the edges, labs increasingly look for tools that connect them instead of adding another silo.

A capable LES for a regulated lab should turn SOPs and methods into guided, enforced workflows; capture instrument data at the point of work without manual transcription; support review by exception so reviewers focus only on out-of-spec results and deviations; record audit trails and electronic signatures automatically; integrate with the LIMS, ELN, ERP, and instruments already in place; and carry the controls needed for 21 CFR Part 11, GxP, and ISO 17025. The harder requirement is adaptability: methods change often, so the system should let the lab update a workflow under governance without a long re-validation project.

No regulation names an LES specifically, and paper-based methods can be GMP-compliant when controls are followed. The case for an LES is data integrity and review speed. Capturing data at the source removes the transcription steps behind most integrity findings, and an LES builds 21 CFR Part 11 controls such as audit trails, electronic signatures, and role-based access into the procedure itself. For labs working under GMP or ISO 17025, that lowers compliance risk and shortens the path to release, even though the regulation does not mandate the software category.

Yes - Tulip's composable platform is trusted by leading pharmaceutical and biotech companies across the globe to deliver laboratory execution capabilities.

It guides analysts through methods, captures instrument data at the point of work, supports review by exception, and produces defensible records, and it also covers sample management, instrument logbooks, and real-time dashboards on the same platform. Instead of replacing your system of record, Tulip connects to the LIMS, ELN, and ERP you already run. Labs adopt Tulip to gain execution-layer capability without locking into one vendor's monolithic suite.

No. Tulip is designed to work alongside the systems you already run. It adds the execution layer, guiding the method and capturing data at the bench, and connects to your LIMS, ELN, and ERP through pre-built connectors and an open API. The LIMS remains your system of record, while Tulip executes the procedure and feeds results back. This is a deliberate contrast with traditional LES modules, which are usually locked to one vendor's LIMS suite and require a larger rip-and-replace commitment.