Abbott Diabetes Care announced it is voluntarily recalling 20 lots of test strips that have the potential to deliver false low blood glucose readings when used with older Abbott meters.

According to an Abbott press release, the recall includes 20 lots of FreeStyle and FreeStyle Lite Blood Glucose Test Strips with expiration dates between May 2014 and March 2015 (see the chart below for lot numbers). Abbott warns that the strips could give a false low reading when used with two of its older meters, the FreeStyle Blood Glucose Meter and the FreeStyle Flash Blood Glucose Meter. The two meters in question both were discontinued by Abbott in 2010. The company says the strips still provide accurate results with some of its newer meters, the FreeStyle Freedom, FreeStyle Lite and FreeStyle Freedom Lite meters.