Abstract: A device (1) comprising an optical apparatus (2) for monitoring bacterial growth of a drug-dosed liquid biological sample. A sample container port for receiving a sample container (6), in use, is provided in the device, the sample container (6) having at least one detection chamber (20) for containing the drug-dosed sample. The optical apparatus (2) comprises a light source (22) configured to emit light along an incident beam axis that, in use, intersects with at least one detection chamber (20) of the sample container (6), and to illuminate the drug-dosed sample contained within the detection chamber (20). The optical apparatus (20) comprises a first photodetector (26) configured to receive light scattered by bacteria in the sample.

Abstract: Test kits for assessing male fertility include a sample holder defining an object plane, a lens, and a two dimensional light sensor defining an image plane arranged along a common linear axis. The distance between the object plane and the image plane may be no more than 50 mm, and may be no more than 30 mm. A lens aperture may have an area of 1-10 mm2. The test kit may have a housing with a maximum linear dimension of no more than 100 mm. Processing circuitry may be provided that is configured to produce a sperm count and/or sperm motility measurements by processing image data from the two-dimensional light sensor.

Abstract: Test kits for assessing male fertility include a sample holder containing at least one sample chamber, a laser light source, and a light detector to detect scattered light intensity from the sample chamber. The sample holder may include multiple sample chambers connected by sperm swim channels. The test kit may have a housing with a maximum linear dimension of no more than 100 mm. Processing circuitry may be provided that is configured to produce a sperm count and/or sperm motility measurements by processing data from scattered light intensity measurements.

Abstract: Test kits for assessing male fertility include a sample holder defining an object plane, a lens, and a two dimensional light sensor defining an image plane arranged along a common linear axis. The distance between the object plane and the image plane may be no more than 50 mm, and may be no more than 30 mm. A lens aperture may have an area of 1-10 mm2. The test kit may have a housing with a maximum linear dimension of no more than 100 mm. Processing circuitry may be provided that is configured to produce a sperm count and/or sperm motility measurements by processing image data from the two-dimensional light sensor.