Abstract: Condensing devices and methods for providing a concentrated biomolecule condensate to one or more biosensing devices are provided. The concentrated biomolecule condensate is obtained from a fluid sample which potentially contains traces of one or more target biomolecules. The fluid sample is first separated into a filtered liquid and a retentate biomolecule condensate. A novel filtering module is provided for this purpose. The target biomolecules in the retentate biomolecule condensate are further separated from unwanted materials using magnetic beads coated with antibodies of the target biomolecules. The beaded biomolecule condensate obtained thereby is processed to extract constituents of the target biomolecules, thereby obtaining the concentrated biomolecule condensate, which is distributed to a biosensing device.