The present invention relates to an adhesive label intended to be secured to a blood bag made of PVC, Kraton, polypropylene or the like, wherein the adhesive label comprises a flexible support and a layer of pressure-sensitive adhesive deposited on one of the surfaces of the support； wherein the label is noteworthy in that the support has a mineral filler rate of silica and/or calcium carbonate (CaCO3) and/or the like, of less than 50%, and wherein at 115° C., the support has an elongation greater than or equal to 2% when a test piece 1.5 cm wide of the support is suspended under tension by a weight of 375 g for 75 minutes, and wherein the blood bag at 115° C. has an elongation of at least 100% when a 1.5 cm wide test piece of a blood bag is suspended under tension by a weight of 375 g for 75 minutes.
