Asphaltenes represent one of the major potential flow assurance problems in the upstream oil industry. Asphaltene precipitation determination is a key step in studying the asphaltene deposition problems because precipitation is a necessary condition for the asphaltenes to deposit. In this work, a novel experimental technique called the "indirect method" is used for studying asphaltene precipitation on both model oil and real crude oil systems. This method, which is a combination of gravimetric and spectroscopic techniques, is proposed for the detection and quantification of asphaltene precipitation in dead oil samples. The term "indirect" refers to an indirect detection of the precipitation Of asphaltenes, by measuring the absorbance of the supernatant fluid after Centrifugation of oilin-alkane mixtures. The results obtained in this study show that the indirect method has three main advantages over direct methods. First, it can be applied to detect asphaltene precipitation and also to quantify the ambunt precipitated. Also, it can be used for crude oils ranging from Very low to high asphaltene content; model oils studied in this work contained 0.1-5 wt % asphaltenes: Finally, the minimum particle size that can be detected with the indirect method is smaller than with the direct methods, and therefore, we can conclude that the indirect method is more sensitive than the direct methods. Different aging times, from 1 h to 1 month, were used in this study, and the results demonstrate that no single concentration of precipitant can be identified as the asphahene precipitation onset. Detection of asphaltene precipitation depends upon the aging time of the samples, and this time dependency is related to the minimum particle size separated by the centrifugation process. A detailed study on the relation of the aging time and the centrifugation speed is necessary as a future work.