Clinical Pathology Laboratories says 2.2M patients exposed in AMCA breach

LabCorp and Quest Diagnostic have already reported that patient information was exposed in that breach.

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The AMCA breach has affected millions of lab patients.

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Clinical Pathology Laboratories is the latest medical testing company to fall victim to a data security breach at billing service American Medical Collection Agency. CPL has discovered that 2.2 million patients' may have had their names, addresses, phone numbers, birth dates and other personal information stolen. 

In a statement reported Wednesday by TechCrunch, CPL also said that 34,500 patients may have had their credit card or banking information compromised. The AMCA sent letters to those patients notifying them of the breach.

AMCA became aware of the breach on March 21, investigated it and informed CPL the following month, according to the lab's statement. CPL said patients' Social Security numbers weren't involved in the incident. CPL doesn't provide AMCA with healthcare records such as laboratory results or clinical history, according to the statement.

In June, LabCorp said the personal and financial data on as many as 7.7 million customers were exposed in the AMCA breach. Quest Diagnostics also said 11.9 million of its patients were impacted. CPL, LabCorp and Quest all conduct lab tests requested by doctors, such as blood work.   

CPL and AMCA didn't immediately respond to a request for comment.