Patients with records in Quanum LSM.
Quest Diagnostics patient records
Someone got into Quanum Lab Services Manager, the Quest system some clinics use to order tests and look up results, and reached patient records.
If you are a Quest patient, your records may have been reached, and Quest will write to you if they were.
Quest has not said how many.
“We believe some patient data within Quanum LSM was accessed, but other systems were not affected.”
Quest Diagnostics
Nothing is asked of patients yet. Quest says it will mail affected patients when its investigation ends.
This one is on Quest, not on you; watch your mailbox for its letter.
Sources
- Quest Diagnostics: Quanum: An update on an incident involving one of our systems October 23, 2026
- Quest Diagnostics, SEC filing: Form 8-K, Item 8.01 October 22, 2026