allows us to share this material easily and at a lower cost (see Image 2).Each batch produced is analyzed with our RT-qPCR methodology, harmonized at the international scale through the primary calibrators from WHO; this process allows us to assign the nominal value (IS%) to each of the 5 levels of expression.A distinctive characteristic of our product is that with the Calibrator 5 we can estimate the limit of quantification of the test and validate the ability to measure until the MR4.5.