eCOA, eConsent and randomisation are often bought from one patient technology vendor, while EDC comes from another. Capture puts all four in one self-serve platform. Here is what to compare and where it fits.
Free sandbox · No credit card · 21 CFR Part 11 aligned
Baseline severity: moderate
Block 7 of 12
Baseline severity: severe
Block 4 of 12
Baseline severity: moderate
Block 6 of 12
Subject 01-0048 randomized
BlindedRandomization no.
R-0166
Treatment arm
●●●●●●
Emergency unblinding
Built in for blinded designs, when participant safety requires it.
The short version
Why teams compare
When consent, randomisation, questionnaires and EDC sit in different systems, someone has to make sure a participant is consented before randomisation, that allocations match between systems, and that questionnaire data lines up with visits. Integrations can automate some of that, but they add build time, testing and reconciliation for every study.
In a unified platform, those checks are built into the workflow. A participant cannot be randomised at a site that has not been activated, allocations are logged in the same audit trail as visit data, and questionnaires follow the same visit schedule. See RTSM software.
Blinding is easier to protect when one system controls access. In Capture, blinded roles never receive the treatment arm from the server, including in exports, and an unblinded administrator handles the randomisation and medication lists.
Study coordinator
Subject 01-004
Randomized · R-0012
KitK-10418
Arm columnNot sent
Unblinded administrator
Subject 01-004
Randomized · R-0012
KitK-10418
Arm columnA
Same subject, same screen. The arm never reaches blinded roles.
Criteria
| Module | What to check | Capture |
|---|---|---|
| eCOA / ePRO | Device model, licence handling, reminders | BYOD in the browser; licence tracking; reminder ladder with quiet hours |
| eConsent | Identity, signatures, witness and representative | Email OTP, investigator countersignature, witness and LAR signatures |
| Randomisation and supply | Stratification, blinding, kit accountability | Block randomisation with stratification, kit dispensing under e-signature |
| EDC | Forms, edit checks, queries, SDV | Locked approved forms, auto-queries, SDV per field |
| Integration | One audit trail or several | All modules in one study and one audit trail |
| Cost and set-up | Per-module fees and build time | Free sandbox; pay when you go live |
In Capture
A participant signs eConsent, is screened with sequential numbering, randomised with stratification at enrolment, and receives their first questionnaire on their phone, all in the same study. Kits are dispensed under electronic signature, and every step is in one audit trail.
Study status Live
Site activated Yes
Randomization list 42 allocations left
Has the subject signed the current informed consent?
Consent, randomise and complete a questionnaire in the free sandbox.
Fit
Very large global programmes with complex supply chains across many depots, many licensed instruments in dozens of languages, and a preference for fully managed services often choose specialist vendors for each module. That is a legitimate choice with its own trade-offs in cost and integration.
For most small and mid-sized studies, a single platform that the study team can build and amend is faster and simpler. Test both approaches against your protocol, and compare total cost including integration and reconciliation, not just licence fees. See best eConsent software and best ePRO software.
Evaluating a shortlist
Consent, screening, randomisation and first questionnaire.
What a blinded user sees, including exports.
Dispensing, returns and reports.
One trail or several to review.
How long a form change takes.
Modules, integrations and per-site fees.
Yes. Questionnaires open in the phone browser from a secure link.
Yes. EDC, ePRO, eConsent and randomisation share one study and one audit trail.
Sponsors, CROs and academic teams comparing patient technology options, including teams using or evaluating Signant Health, 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 Signant Health.
Yes. The free sandbox has every feature with sample data, no credit card and no time limit.
Yes. Block randomisation with stratification, blinded and unblinded roles, and kit dispensing under electronic signature are in the same study as EDC.
Yes, with email OTP verification, investigator countersignature, and witness and representative signatures.
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