Standalone IRT systems handle randomisation and supply for complex global trials. Many studies need solid randomisation, blinding and kit accountability without a separate system to integrate. Here is what to compare and where Capture fits.
Free sandbox · No credit card · 21 CFR Part 11 aligned
Kit K-10418 · custody history
Only physically possible combinations can be saved.
The short version
Why teams compare
When IRT and EDC are separate, the two systems must agree on who is enrolled, who was randomised to what, and which kits were dispensed. Integrations or manual reconciliation handle that, and both take effort for every study. Mismatches, such as a participant randomised in IRT but missing in the EDC, are a familiar monitoring finding.
When randomisation lives in the EDC, the participant, their allocation and their visit data are one record. Enrolment caps, site activation rules and blinding are enforced in one place. See RTSM software for clinical trials and the IRT and IWRS glossary entry.
Global trials with complex depot networks, forecasting, temperature excursion management and many resupply rules may need a specialist IRT. Map your supply requirements before deciding.
Study status Live
Site activated Yes
Randomization list 42 allocations left
Has the subject signed the current informed consent?
Criteria
| Criterion | Why it matters | Capture |
|---|---|---|
| Randomisation design | Blocks, stratification and caps | Block randomisation with stratification and enrolment caps |
| Blinding | Protects the trial's integrity | Blinded roles never receive the treatment arm from the server |
| Emergency unblinding | Participant safety | Available to investigators; approvals without revealing the answer; logged |
| Kit management | Dispensing and accountability | Kit dispensing under e-signature, accountability report and export |
| EDC link | Reconciliation effort | Same study, same participant record, same audit trail |
| Complex supply | Depots, forecasting, resupply rules | Map requirements; very complex supply chains may need a specialist IRT |
In Capture
Set the arms, block size and stratification factors once at setup. Allocation happens at enrolment, the same way at every site, and is logged in the audit trail. An unblinded administrator owns the medication and randomisation lists, kits are dispensed under electronic signature, and blinded users see "Treatment assignment blinded" everywhere.
1 of 2 kits confirmed
Try it as a blinded and an unblinded user in the free sandbox.
Planning
How many sites and countries will receive supply, and from how many depots? Is the product temperature-controlled? Are there dose titrations or kit types that depend on visit data? How often will supply be resupplied, and who forecasts it? The answers show whether you need forecasting and depot logistics or mainly randomisation, blinding and accountability.
Also plan the randomisation list itself. The randomization list generator helps check a design during planning; the live, concealed list is managed in the study.
Supply
Even simple studies need a supply plan: which kit types exist, how many are dispensed at which visits, how returns and unused kits are recorded, and how accountability is reconciled at close-out. Temperature-controlled products add storage and excursion records at sites.
For studies with a single depot and predictable dispensing, kit management inside the EDC keeps dispensing, returns and accountability next to the visit data. For global programmes with many depots and resupply rules, map the logistics first and choose accordingly. See the kit lifecycle on the RTSM page.
Evaluating a shortlist
With stratification factors.
Screens and exports.
Who can, and what is logged.
Check accountability records.
Depots, temperature control and resupply.
IRT licence plus EDC integration.
Kit accountability reports and exports support reconciliation at close-out.
Studies with complex depot networks and forecasting may need a specialist IRT; map your logistics first.
Sponsors, CROs and academic teams comparing IRT and RTSM options, including teams using or evaluating Suvoda, who want to see a self-serve, unified option alongside it.
No. Vendors change their offerings, so we describe what to evaluate and where Capture fits. Confirm current capabilities and terms directly with Suvoda.
Yes. The free sandbox has every feature with sample data, no credit card and no time limit.
For many studies, yes: randomisation, blinding, emergency unblinding and kit accountability are built in. Very complex global supply chains may still need a specialist IRT.
Blinded roles never receive the treatment arm from the server, and an unblinded administrator handles unblinded tasks.
Keep exploring
Capture vs Suvoda
The head-to-head comparison.
RTSM software
Randomisation and supply.
IRT and IWRS
Definitions.
Clinical trial randomization software
Randomisation designs.
Randomization list generator
Plan a list.
Signant Health alternatives
Patient technology comparison.
Block randomization software
Block designs.
Blinding and kits in the EDC. Free sandbox.