Quest Diagnostics says patient records may have been accessed
Oct 23, 2026 · Summarized by Fundy Tech from SecurityWeek
Quest Diagnostics says unauthorized access hit its Quanum Lab Services Manager system. The company believes certain patient records were accessed and is still investigating the scope.
Key points
- Quest learned of the breach this week and notified law enforcement.
- Quanum Lab Services Manager is used by clients to place and review test orders.
- The company has not said how many patients were affected.
Why it matters
People who use Quest services may need to watch for unexpected messages or account issues. For households, medical data breaches can affect privacy and trust even when the full scope is still unknown. Businesses that store health data should note how quickly a breach can spread beyond one system.
Who’s affected: Quest Diagnostics patient and client records
What to do
- Watch for notices from Quest Diagnostics.
- Be cautious of unexpected emails or calls about test results.
- Review account security where you use patient portals.
Original reporting
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