The Graduate Record Examination® General Test (GRE® General Test) may serve as an alternative admission requirement if your final grade is lower than a 5.0 (Swiss scale), or if you are unable to provide the required evidence in mathematics and in statistics or in empirical social research methods of at least 10 CP as stated in the study regulations.

For more information on admission requirements and required GRE® results see here.
For more information on the GRE® General Test see here.