Medical device maker Dexcom says two lots of its Dexcom G7 continuous glucose monitors were stolen during the disposal process and later resold through unauthorized channels in the US.

The company said the sensors had originally been marked as scrap after failing to meet internal quality standards. According to Dexcom, the products were sent to a third-party vendor for destruction and recycling, which is part of the company’s normal quality control process.

But during ongoing quality and accounting reviews, Dexcom discovered that some of the discarded devices had not been destroyed.…