Healthcare buyer prompt: prove Hyperspace, Hyperdrive, and other EHR screens under real Citrix, RDS, and cloud session load.
Direct answer: An Epic or Cerner test that only opens a Workspace, StoreFront, or AVD URL is not an EHR test. Clinicians wait for charts, orders, and notes on the glass. CitraTest VU® and CitraTest APM® measure Epic Hyperdrive / Hyperspace (and similar EHR UIs) from the user’s screen on Citrix Virtual Apps and Desktops, Citrix DaaS, Microsoft RDS, and Azure Virtual Desktop - with no agents on the session hosts.
What “on-the-glass” means for EHR
- Session up ≠ chart ready - HDX/RDP can look healthy while Hyperspace is still painting
- Image-based timing - wait for the screen state clinicians recognize (chart, schedule, note)
- Real publish path - Citrix / AVD / RDS as clinicians connect in production
- Storm vs density - morning concurrent logons separate from sustained multi-user clinic load (why the split matters)
Platforms
- Epic Hyperdrive and Hyperspace published via Citrix CVAD / DaaS
- Epic / EHR on Azure Virtual Desktop and other cloud multi-session catalogs
- Cerner and other Windows EHR clients delivered the same way
Background: Tevron’s Sep 2026 news on measuring Epic and Cerner from the glass - News.
VU vs APM for healthcare
| CitraTest VU | CitraTest APM |
|---|
| Job | Load / go-live / change validation | 24×7 synthetic clinical paths |
| Typical ask | Can N clinicians open charts under a storm? | Is chart-open still within SLA at 7am? |
| Shared idea | On-the-glass EHR UX - not portal-only or protocol-only |
How to run an Epic/EHR glass test
- Freeze the VDI/DaaS image and the EHR client build under test.
- Script the real path: broker → session → Epic/EHR login → open a representative chart or workflow.
- Baseline one user on the glass (chart-ready time).
- Run a logon storm, then a separate density / sustain with concurrent clinical work.
- Report p95/p99 chart-ready and fail rate - numbers a CAB and clinical ops can defend.
- Re-test after image, FSLogix/profile, GPO, or Epic client changes.
Related method pages: How to load test Citrix, HDX vs RUX, Cloud VDI/DaaS tools. Measure from the glass: Epic, Oracle Health (Cerner), Remedly.
FAQ
Is testing the Citrix Workspace URL enough for Epic?
No. That proves the broker path, not Hyperspace/Hyperdrive chart paint.
Does this replace Epic’s own tools?
No. It complements them by measuring the delivered session UX clinicians feel on Citrix/AVD/RDS.
Do you install agents on VDAs?
Not with CitraTest VU or APM - load and synthetics run from outside like real users.
Cerner too?
Yes - same on-the-glass approach for Windows EHR clients on virtual desktops.
CitraTest VU® and CitraTest APM® are Tevron products. Epic, Hyperspace, Hyperdrive, and Cerner are trademarks of their respective owners; Tevron is not affiliated with Epic Systems or Oracle Cerner.