A preparation device for preparing a sample for measurement of a target biomolecule in a probe of a bodily fluid is disclosed that includes a substrate with a capillary network configured to transport the probe of the bodily fluid along the substrate. The substrate may be provided with a fluorescent, reflective or self-luminescent marker adapted to bind with the target biomolecule to emit a reaction radiation when excited by an excitation source. The fluorescent, reflective or self-luminescent marker is adapted, when bound to the target biomolecule and excited by the excitation source, together with the target biomolecule to emit the reaction radiation at an intensity proportional to a quantity of the target biomolecule in the probe of the bodily fluid.

A preparation device (1) for preparing a sample for measurement of a target biomolecule in a sample of a bodily fluid, such as anti-Mullerian hormone in blood, comprises a substrate (12) with a capillary network configured to transport the sample of the bodily fluid along the substrate, wherein the substrate (12) is provided with a fluorescent, reflective or self-luminescent marker adapted to bind with the target biomolecule, said fluorescent, reflective or self-luminescent marker being adapted, when bound to the target biomolecule and excited by an excitation source of a diagnostic apparatus, together with the target biomolecule to emit reaction radiation at an intensity proportional to a quantity of the target biomolecule in the probe of the bodily fluid. The preparation device may preferably comprise a near-field communication (NFC) chip (114) storing a unique identifier of the preparation device.

The invention concerns a test system for carrying out blood sugar tests with a diagnostic tape cassette which comprises a windable analytical test tape for detecting an analyte and a cassette housing accommodating the test tape, and a test device which has a device housing for inserting and removing the tape cassette and a measuring unit for detecting the analyte on the test tape. According to the invention it is proposed that the tape cassette can be detachably fastened by positioning elements on a platform mounted in the device housing and that the measuring unit is rigidly attached on the platform or can be engaged therewith.