Close the Loop on a Critical Lab Value

Who / when: the Lab Scientist who releases a result that contains a life-threatening value, then the Lab Manager who closes the loop, with the ordering Physician on the other end of the call. A “critical value” is a result so far outside the safe range that the ordering team must be told and must repeat it back — flagging it on a screen is not enough.

A critical value rides through three hands. The scientist enters and releases the result; releasing it auto-raises a pending critical-value record; the lab manager phones the ordering clinician and records what they read back. Only the read-back closes the loop — and every step is audited.

1. Lab Scientist — open Labs → Results & Worklist and click the patient’s sample to open its analytes. Type each value into the grid. When you enter a value past the critical band (say a Potassium of 7.5 against a critical-high threshold of 6.2), the grid flags the cell “Critical High” and shows the auto-flag banner. You do not have to do anything special — the system has already noticed.

2. Lab Scientist — when the values are right, press “Verify & Sign Out”, then enter your 6-digit eSign PIN (your electronic signature, separate from your password) and press “Confirm Release”. The result is now Released.

   Note

   The instant a result with a critical value is released, Veona auto-creates a Pending critical-value record for it. The scientist who runs the bench does not need the read-back permission — releasing the result is enough to raise the loop. The manager closes it.

3. Lab Manager — open Labs → Critical Results (“Flag, notify, read-back, and acknowledge critical values with full audit”). The newly released value sits in the list as Pending. Press “Notify Next” to take the next pending finding, or open the patient’s row directly.

4. Lab Manager — telephone the ordering Physician and read the value to them. Ask them to repeat it back to you in their own words.

5. Lab Manager — back on Labs → Critical Results, choose the Channel you used (Phone, SMS, WhatsApp, or In-App) and type the verbal read-back — what the clinician repeated to you, not a bare “OK.” The contract enforces a minimum read-back length, so a one-word acknowledgement is rejected.

6. Lab Manager — submit. The row moves Pending → Notifying → Acknowledged, and Veona records who notified, the channel, the read-back text, and the time. The loop is closed.

   Caution

   The notification itself carries no clinical content — it tells the recipient there is a critical result to attend to, never the value, never the patient’s diagnosis. The value is communicated by the human, voice to voice, and confirmed by the read-back. That is the safety control.

   Tip

   The split is deliberate. The bench scientist enters results but does not close the loop; the lab manager handles the read-back but does not enter results. No one person both produces the value and signs off that it was communicated — that separation is what makes the audit trustworthy.

What happens next: the released result is already on the Physician’s results inbox and the patient’s chart, and a branded result PDF exists. With the read-back acknowledged, the critical-value record shows the full closed loop — releaser, notifier, channel, and read-back — so an auditor can reconstruct exactly who was told and what they confirmed. An imaging critical finding follows the same closed-loop pattern from the radiology side.

Follow the trail

• Previous: Match, Verify and Release an Analyzer Result
• Related: Close the Loop on a Critical Imaging Finding · Enter a Lab Result by Hand and Release It