A sample input device for transferring liquid samples, typically blood samples, from sample containers, typically syringes, into analyzer devices for examining the composition of the samples, wherein the sample input device comprises retention elements for at least partly keeping particulate components of the sample from passing over from the sample container into the analyzer, and wherein the sample input device further contains at least one ventilation device that allows ventilating the sample container while transferring the sample from the sample container into the analyzer, typically when aspirating the sample via the analyzer.