The FreeStyle Libre system is a factory-calibrated Sensor that has been proven to safely and successfully replace routine self-monitoring of blood glucose (SMBG) and deliver important clinical benefits.^1,2 Specific details about our calibration process are proprietary. 

1. Bolinder, et al. Novel glucose-sensing technology and hypoglycaemia in type 1 diabetes: a multicentre, non-masked, randomised controlled trial. The Lancet, published online 12 Sep 16. 

2. Haak T, Hanaire H, Aijan R et al. Flash glucose-sensing technology as a replacement for blood glucose monitoring for the management of insulin-treated type 2 diabetes: a multicentre, open-label randomised controlled trial. [published online ahead of print December 20, 2016]. Diabetes Ther. 2017;8(1):55-73. doi:10.1007/s13300-016-0223-6.