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Glossary

Last updated Oct 21, 2026

Clinical terms, platform terms, and the regulatory acronyms that appear in this library.

The platform's own words

TermMeaning
OrganizationYour company: a sponsor, a CRO, a site network. Owns its people and studies and never sees another organization's data
Super-AdminA person who runs the platform itself, in the platform console. Not an organization's administrator, and sees no clinical data
Organization AdminThe administrator of one organization. Governs people, roles and studies and holds no study role
Control plane and data planeThe two applications: the platform console (organizations, feature switches, the platform ledger) and the trial application (studies, people and data)
StudyOne clinical trial. Everything else lives inside a study
SiteA hospital or clinic taking part
ParticipantA trial participant. Some screens and API names say subject
VisitA scheduled protocol appointment
Visit instanceOne participant's copy of a visit, with its own date
Visit windowHow many days before and after the scheduled date a visit is on time. Entry before the window opens needs early access; a visit after it is flagged out of window
FormAn electronic case report form: the page of questions filled in at a visit
RecordOne participant's answers to one form at one visit. This is what gets signed
Event formA form recorded when something happens off the schedule: an adverse event, a serious adverse event, a medication, another event the study tracks
CasebookThe grid of the study (a participant for each row, a visit for each column) showing what is complete, queried, verified and signed; each participant also has their own
VersionA numbered, sealed snapshot of the study design: forms, visits, mapping and rules go live together. Its states are Build, UAT, Awaiting sign-off, Approved, Live and Superseded (or Withdrawn)
Snapshot and content hashThe compiled design a version is frozen into when it is submitted to UAT, with a fingerprint of its content. Sign-offs and design exports carry the hash
AmendmentA new version built beside the Live one after the study is running
UAT cycleOne round of testing of a frozen version on test data, ending in pass or fail
WorkspaceUAT or Live: where a study's test data or production data lives. They never mix
Study stateSetup, Active, On hold, Closed to enrolment, Completed, Locked or Archived (Statuses)
QueryA question about a value, with a thread of replies
Auto-queryA query opened by an edit check or a rule rather than by a person
Edit check and severityA rule on a field, with a severity of Query, Block or Warn that decides what a failing save does
RuleA study-level check that can look across forms
SDV planWhich fields, forms and visits a monitor must verify against source
Stale (verification)A verification whose value has since changed; it returns to the monitor's queue
Delegation of authorityThe investigator's signed authorization of a site staff member, with dates
Step-up codeThe fresh one-time code a signature asks for, valid for that record and meaning only
Reason for changeThe written explanation required when an already-entered value is modified
Early accessA recorded exception permitting data entry before a visit's window opens
Awareness timeWhen the site learned that an event was serious; the reporting clock starts here
ReconciliationThe record that a serious event agrees, or does not, with the safety database
Lock requestThe first of the two signed steps of a database lock; a second person confirms it
Feature switchA per-organization on or off setting for a licensed feature, set in the platform console
Access exceptionA time-limited addition or removal of one permission on one grant, with a reason and, for a risky permission, a second approver
Hash chainThe way each audit entry stores the hash of the one before it, so a change anywhere in the trail shows

Clinical and regulatory terms

TermMeaning
AEAdverse event
SAESerious adverse event
SUSARSuspected unexpected serious adverse reaction. In Trialion a flag on a related and unexpected serious event, and nothing more
ALCOA+Attributable, Legible, Contemporaneous, Original, Accurate, plus Complete, Consistent, Enduring, Available: the data-integrity standard
ArmA treatment group in a randomized study
BaselineThe reference date from which the visit schedule is calculated
BlindingConcealing treatment allocation from participants, investigators, or both. Not built (Not built yet)
CDASHCDISC's standard for how case report forms are structured
CDISCClinical Data Interchange Standards Consortium: the body behind ODM, SDTM and CDASH
CRAClinical Research Associate: the monitor
CRCClinical Research Coordinator: the site coordinator
CRF / eCRFCase report form, electronic case report form
CROContract Research Organization
CSVComputer System Validation. (Also a file format; context distinguishes them)
Database lockFreezing the data for analysis. In Trialion it takes two different people
DeviationA departure from what the protocol requires
DMC / DSMBData Monitoring Committee / Data and Safety Monitoring Board
E2BThe standard for electronic transmission of individual case safety reports. Not produced
EDCElectronic Data Capture
EligibilityThe investigator's determination that a participant meets inclusion and exclusion criteria
ePRO / eCOAElectronic patient-reported outcomes / clinical outcome assessments
GAMP 5The pharmaceutical industry's guidance on validating computerized systems
GCPGood Clinical Practice
ICFInformed Consent Form
ICH E6The international GCP guideline. R3 is the current revision
IMPInvestigational Medicinal Product
Informed consentThe participant's documented agreement to take part. Required before any study procedure
IQ / OQ / PQInstallation, Operational and Performance Qualification: the three stages of validation
IRB / IECInstitutional Review Board / Independent Ethics Committee
IRT / IWRSInteractive Response Technology / Web Response System: randomization and supply
MedDRAThe dictionary used to code adverse events
MonitorThe person who verifies site data against source documents
ODMCDISC Operational Data Model: the XML interchange format for clinical data
PIPrincipal Investigator: the investigator of record at a site
ProtocolThe document defining how the trial is conducted
RandomizationAllocating participants to arms by chance
SDTMCDISC's Study Data Tabulation Model: the submission format
SDVSource Data Verification: comparing captured data against the hospital's source document
SoDSeparation of duties: one person must not perform two conflicting steps
Source documentThe original hospital record a value was taken from
SponsorThe organization responsible for the trial
UATUser Acceptance Testing: validating the study design before going live
WHODrugThe dictionary used to code medications
WithdrawalA participant leaving the study early

Regulations named in this library

ReferenceWhat it is
21 CFR Part 11US FDA rules on electronic records and signatures
21 CFR 56US FDA rules on institutional review boards
EU Annex 11The EU GMP annex on computerized systems
DPDP Act 2023India's Digital Personal Data Protection Act
GDPRThe EU General Data Protection Regulation
HIPAAUS health information privacy and security rules
ICH E2AGuidance on safety data management, including expedited reporting timelines
ISO 27001The information security management standard
OWASP Top 10The most common web application security risks