Quest Diagnostics Reports Unauthorized Access to Quanum Patient Records
Summary
Quest Diagnostics says an unauthorized party accessed patient data in its Quanum LSM system, discovered October 21. The company paused access and is investigating; the number of patients and specific data types remain unknown.
Key points
- Quest says it discovered unauthorized access to Quanum Lab Services Manager on October 21 and believes patient records were accessed.
- Quest confirmed that PHI and PII were involved but has not identified the specific data types or number of affected patients.
- The company paused access to Quanum LSM and is investigating with outside cybersecurity experts and law enforcement.
- Quest says its Essential Insights and LabHQ platforms were paused as a precaution and that no data was accessed in those systems.
- Quest stated that the incident was not related to a PHP programming language issue.
- Core business operations remained available, and providers using EMRs or direct LIS interfaces were not affected; Quanum LSM users could use Quanum eLabs or paper requisitions.
Article Details
- Victim Organization
- Quest Diagnostics
- Incident Type
- Unauthorized access to patient records in the Quanum Lab Services Manager system
- Data Types Exposed
- Protected health information (PHI)
- Personally identifiable information (PII)
- Operational Impact
- Quest paused access to Quanum LSM after discovering the incident and also paused Essential Insights and LabHQ as a precaution; it said no data was accessed in those two systems. Core business operations continued, and providers using EMRs or direct LIS interfaces were not affected. Quest expected to restore full Quanum LSM service as soon as October 23, 2026.
- Claim Status
- confirmed
Products
Essential InsightsQuest also paused access to its Essential Insights and LabHQ platforms.LabHQQuest also paused access to its Essential Insights and LabHQ platforms.Quanum eLabsMeanwhile, Quanum LSM users can switch to Quanum eLabs with the same credentials, or use paper requisitions.Quanum Lab Services ManagerOn October 21, Quest Diagnostics discovered unauthorized access to its Quanum Lab Services Manager (LSM) system.