Nearly 8 million LabCorp patients could be affected by a lapse in a collection agency

LabCorp said that about 7.7 million consumers are affected by a violation on the part of the third-party collection company American Medical Collection Agency.

In a document filed Tuesday with the US Securities and Exchange Commission, LabCorp said the breach occurred between August 1, 2018 and March 30, 2019.

Information that may have been displayed includes names, addresses, birth dates and balance information.

Notices are sent to LabCorp customers whose credit card or bank account information was accessed.

The disclosure comes a day after a collection company that was working with Quest Diagnostics informed the medical testing company that data from 11.9 million patients may have been affected during a violation.

The American Medical Collection Agency (AMCA), a provider of bill collection services, said that "an unauthorized user had access to the AMCA system containing personal information that AMCA had received from various entities, including Quest ".

Forensic experts are reportedly investigating the violation.