Rethinking the User Requirements Specification in RTSM Software

The User Requirements Challenge in Modern RTSM

In Randomization and Trial Supply Management (RTSM), the User Requirements Specification (URS) plays a critical role in ensuring the system aligns with your protocol. It’s where the design becomes real, capturing everything from how screening modules behave to how drug supply is calculated and dispensed.

For large pharma Sponsors, this process is well-supported. Dedicated RTSM project managers, clinical supply leads, and QA specialists can review every line of a long and detailed URS and track every functional requirement across teams.

But for small and mid-sized biotechs, that model doesn’t scale. Teams are lean, timelines are tight, and there may be limitations in knowing what to look for across hundreds of pages that covers both protocol specifics as well as RTSM base-system behavior. The expectation to review every detail is still there, but the resources often aren’t.

That’s where the challenge lies for smaller Sponsors. You still need a URS, just like large pharma, but you don’t have the luxury of weeks-long document reviews or a dedicated team. What you need is the same outcome: clear documentation of how the system should behave, but you need a smarter, more focused process to get there.

With upfront planning, a well-structured URS process can clarify expectations, reduce downstream risk, and make it easier for every stakeholder to engage, whether they want a quick overview or a deep dive into platform logic.

The Temptation of the “Build-First, Document-Later” Shortcut

Some RTSM software vendors try to skip the URS altogether. Their model? Take your protocol, configure the system in a sandbox, and generate a pseudo-URS after the fact, based on what was built.

On the surface, that may sound even faster than a streamlined spec. But in practice, it introduces real risk.

In regulated environments, you don’t start with a finished system and reverse-engineer the documentation. You define what needs to be built first, then use that specification to guide configuration, testing, and approval.

Without that upfront URS, there’s no record of why the system behaves the way it does. And in RTSM software where most of the logic is behind the scenes (in dose algorithms, validation checks, and complex supply triggers), you’re relying on memory or assumptions if anything ever needs to be explained, audited, or changed later.

It’s faster, but fast at the expense of quality and traceability.

User Requirements Specification: Structured and Streamlined

Efficiency in RTSM setup doesn’t mean cutting corners, and it certainly doesn’t mean skipping the foundational planning that ensures your system aligns with the protocol. Some Sponsors genuinely require what could be a several-hundred-page URS, and for those Sponsors, that level of detail is essential. Others need a more streamlined version that’s easier to digest and manage with leaner teams.

What matters most is having a URS process that flexes, one that fits the complexity of the study and the structure of the Sponsor team, without compromising clarity or quality.

A modern URS process should be structured, scalable, and thoughtfully led. The RTSM provider’s job is to guide stakeholders through the requirements gathering and documentation in a way that supports confident decision-making. That means engaging the right people at the right time, and presenting the right level of detail, whether that’s a deep dive into platform behavior or a focused review of study-specific logic.

It starts by centering the URS on the things that vary from study to study: protocol nuances, dosing rules, data formats, and stakeholder-critical workflows. These targeted reviews help teams validate what matters to their role, while bypassing system-wide documentation that may not be relevant. The result is a more effective URS cycle, better alignment before UAT, and fewer surprises downstream.

Of course, even when a Sponsor opts for a lighter-weight spec, that doesn’t mean the details disappear. A strong RTSM provider will still capture all platform-level behaviors, defaults, and validation logic, just in a format that’s available as needed. When a UAT issue arises, an audit is conducted, or a change order is requested, the full documentation should be there to back it up.

This right-sizing of the URS makes it easier to bring stakeholders to the table, clarify expectations early, and build trust in how the system will behave. It’s like building a house: You don’t sketch out the blueprints after the roof is on, and you don’t need to hand everyone the full architectural manual if you’re only customizing a few rooms. But you do need to know it’s available when you need it.

URS: Getting it Right

A full User Requirements Specification still has its place, especially for Sponsors with the time, structure, and internal expertise to review every detail. Though for growing biotechs with leaner teams, the traditional model often creates friction that slows the process down.

Korio offers a modern and flexible approach that bridges both realities. Whether you need a focused, study-specific specification or a deeply detailed system-wide document, our process ensures you get the right level of clarity without unnecessary overhead. The foundational details are always captured, traceable, and ready when needed.

With experienced RTSM project managers guiding the process, a dynamic documentation structure, and a platform built for transparency, Korio helps Sponsors move faster, plan smarter, and stay aligned from day one. No matter how complex the study, you get the confidence of knowing the details are covered.