Quest Diagnostics’ Quanum LSM Compromised: What Patients and Providers Need to Know
Quest Diagnostics disclosed that an unauthorized party accessed its Quanum Lab Services Manager (Quanum LSM) system, a platform used by healthcare clients to order laboratory tests and retrieve results. The company detected the activity on October 21, 2026, and temporarily suspended access to the affected service while investigators work to determine what patient information, if any, was actually exposed. Quest says its core business operations remain intact and that other…
