Arrangement (500) configured to measure a biomarker value of an animal milk sample. The arrangement (500) comprises a cassette (130). The cassette (130) comprises a carrier tape (170) comprising test zones (180a, 180b, 180c) for indicating the biomarker value. The carrier tape (170) is arranged on spools (131, 132) arranged to co-operate with a cassette external motor (420). The cassette (130) also comprises an inspection window (135). Further the arrangement (500) comprises a service module (120) comprising a camera (210) configured to inspect the test zone (180a, 180b, 180c). The service module (120) also comprises a motor (420) configured to be engaged with a cassette spool (131, 132), and a tube element (220) configured to provide the milk sample to the test zone (180a, 180b, 180c).
