A sampling method for taking a sample in a manner that reliably avoids mistakes performed on a data processing system with a data memory, and a user interface communicatively connected to the data processing system, wherein in the data memory a plurality of sample-related and analysis-related data records are saved and wherein the analysis-related data records are relationally linked with the sample-related data records, and wherein the user interface has an input/output device, which comprises a reading device and a display means, comprising the steps of: • transmitting a request instruction from a process management system to the data processing system, wherein the process management system and the data processing system communicate via a data exchange protocol, in particular HL7; • detecting a first identification marker of a first person by means of a reading device, reading the identifier associated with the first identification marker and transmitting the identifier to the data processing system; • reading the analysis-related data records from the data memory and transmitting to the user interface and displaying an analysis identifier on a display means of the input/output device; • determining a subset of analyses by having an operator selecting at least one analysis identifier by means of the input device and transmitting the subset to the data processing system; • forming an order data record from the identifier and a subset and saving the order data record in the data memory; characterised by the following steps: • reading the respective sample identification marker of the sample-related data records relationally linked to the subset and transmitting them to the user interface and displaying the sample identification marker or sample identification markers on the display device, wherein the sample identification marker is an image of a sample container; • following performing the sample taking by a second person activating the detecting device and detecting a second identification marker of the second person, reading an identifier from the second identification marker and transmitting the identifier to the data processing system and saving the identifier in the order data record; • detecting an identification marker of a sample container by a reading device, reading an unequivocal identifier from the identification marker of the sample container, transmitting the identifier to the data processing system and saving in the order data record, wherein the unequivocal identifier of the sample container is formed by at least one marker determined at the time of manufacture of the sample container, the marker being formed from the group: manufacturer's identifier, manufacture time stamp, use period, batch number and article number; • reading a type information from the saved unequivocal identifier of the sample container and comparing with a type information saved in the analysis-related data record of the subset in the order data record; • if there is no match, outputting a first error message on the display means. • transmitting a request instruction from a process management system to the data processing system, wherein the process management system and the data processing system communicate via a data exchange protocol, in particular HL7; • detecting a first identification marker of a first person by means of a reading device, reading the identifier associated with the first identification marker and transmitting the identifier to the data processing system; • reading the analysis-related data records from the data memory and transmitting to the user interface and displaying an analysis identifier on a display means of the input/output device; • determining a subset of analyses by having an operator selecting at least one analysis identifier by means of the input device and transmitting the subset to the data processing system; • forming an order data record from the identifier and a subset and saving the order data record in the data memory; • reading the respective sample identification marker of the sample-related data records relationally linked to the subset and transmitting them to the user interface and displaying the sample identification marker or sample identification markers on the display device, wherein the sample identification marker is an image of a sample container; • following performing the sample taking by a second person activating the detecting device and detecting a second identification marker of the second person, reading an identifier from the second identification marker and transmitting the identifier to the data processing system and saving the identifier in the order data record; • detecting an identification marker of a sample container by a reading device, reading an unequivocal identifier from the identification marker of the sample container, transmitting the identifier to the data processing system and saving in the order data record, wherein the unequivocal identifier of the sample container is formed by at least one marker determined at the time of manufacture of the sample container, the marker being formed from the group: manufacturer's identifier, manufacture time stamp, use period, batch number and article number; • reading a type information from the saved unequivocal identifier of the sample container and comparing with a type information saved in the analysis-related data record of the subset in the order data record; • if there is no match, outputting a first error message on the display means.