Find the right participants. Run studies without spreadsheets.

Cenprax is patient recruitment and study management for clinical research sites. One registry, clear cohorts, tracked studies, previewed outreach — with permissions and an audit trail under all of it.

Start a clinic Request a demo Sign in

Choose a plan, pick your address, and pay — we review every clinic before it opens.

Clinic A Search people, groups and roles AL
Welcome back, Ada
What is moving in your registry and your studies.
Patients in registry
26
people
New this month
4
added
Contactable
22
may be reached
Open studies
1
enrolling
Registry by age
20–295
30–394
40–496
50–595
Studies
Cardiometabolic outcomes in adults
ABC-101 · Sponsor A
Recruiting
Long-term device follow-up
DEF-22 · Sponsor B
Closed
Sleep quality in shift workers
SLP-03 · Sponsor C
Draft
Product

One place for recruitment and studies.

Registry

One longitudinal record per person — contact details and preferences, demographics, condition tags. Sensitive fields are encrypted at the field level.

Studies

Each protocol tracked from draft to completed, with its sponsor, its code, and the staff assigned to it.

Communications

Reusable email templates, previewed exactly as they will send. Contact preferences gate every send.

Registry & cohorts

Know who you could call on.

Filter the registry by age band, condition tags, contactability and catchment area, and get a cohort for a protocol in minutes. Lists show counts and registry codes — identities stay out of them.

Do-not-contact is a first-class flag, honored everywhere. And Cenprax is a research registry — not an EHR.

RegistryClinic A · 26 people
Registry #NameContactAgeLang
P-00000001Ada LovelaceContactable30–39EN
P-00000002Grace HopperContactable40–49ES
P-00000003Alan TuringDo not contact20–29EN
P-00000004Katherine JohnsonContactable50–59EN
P-00000005Jean BartikContactable60–69ES
Cohort12 candidates
Age 40–69 Contactable ZIP 331
Counts and codes only — identities stay out of lists.
Studies & protocols

Every study, exactly one status.

Draft, recruiting, active, closed, completed — each protocol carries its status, its sponsor and its code, plus the staff assigned to it. The whole portfolio stays legible at a glance.

Draft Recruiting Active Closed Completed
Cardiometabolic outcomes in adults
ABC-101 · Sponsor A
ALGH
Recruiting
Long-term follow-up of an implanted device
DEF-22 · Sponsor B
AL
Closed to enrolment
Sleep quality in shift workers
SLP-03 · Sponsor C
GH
Draft
Communications

See the exact email before it leaves.

Write templates once, in the built-in rich-text editor. Sending to a patient shows a preview of precisely what will go out.

Contact preferences gate every send. If someone has asked not to be contacted, the send is blocked — everywhere.

Template · Study invitation
Hello — Clinic A is recruiting for a study on cardiometabolic health (ABC-101). If you would like to hear more, reply to this email or call the clinic.
Preview before send
ToAda Lovelace · P-00000001
SubjectInvitation to ABC-101
Hello — Clinic A is recruiting for a study on cardiometabolic health (ABC-101). If you would like to hear more, reply to this email or call the clinic.
Contact preferences checked Send
Security & isolation

The mechanisms, stated plainly.

Cenprax is built for HIPAA compliance. No badges, no absolutes — these are the actual mechanisms, and each one is inspectable in a demo.

01

Field-level encryption

Sensitive fields are encrypted individually with AES-256-GCM.

02

Blind indexes

Encrypted fields stay searchable without being decrypted first.

03

One clinic, one database

Each clinic runs on its own subdomain with its own isolated database. One clinic structurally cannot see another's data.

04

A permission on every action

Clinics define their own roles. Viewing diagnoses, sending email and editing records are separate rights.

05

A full audit trail

Who viewed, changed and sent what — recorded automatically.

06

Automatic session logoff

Idle sessions sign out on their own.

EN · ES
The whole interface, in English and Spanish.
Toda la interfaz, en inglés y en español.

See Cenprax on your own data structure.

A demo walks through the registry, cohort discovery, study tracking and outreach — on synthetic data, at your pace.

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