3.2. Thermogravimetric analysis (TGA)The same blood samples were considered for thermogravimetric analysis (TGA) and analyzed after collection and during storage at 4 °C until 15 days. In order to evaluate modifications in the thermogravimetric (TG) profile of blood associated to aging, the resulting curves of each sample analyzed over time were compared for both healthy and thalassemia subjects and results of the average TG curves are reported in Fig. 1.