A test for predicting whether a non-small-cell lung cancer patient is more likely to benefit from an EGFR-I as compared to chemotherapy uses a computer-implemented classifier operating on a mass spectrum of a blood-based sample obtained from the patient. A management element is implemented by making the management program resident in the main storage device. A part of first semiconductor layer being exposed. Also, a driving signal generator generates a driving signal in response to the square wave signal from the fundamental wave generator and the PWM signal from the PWM comparator. A log book is kept on the first data processing system, in which changes relating to the content of the first database are entered, wherein depending on a log book entry, a transmission of data relating to the change of at least one data record from the first data processing system to the second data processing system is carried out and the transmitted data are stored in the second database. The tester is small enough to be conveniently moved.