Embodiments disclose a device for testing biological specimen. The device includes a receiving mechanism to receive a carrier. The carrier includes a holding area that carries or has been exposed to the biological specimen. The device includes a camera module arranged to capture imagery of the holding area. The camera module includes an focusing motor operable to adjust a focal point of the camera. The device also includes a processor that is configured to utilize the camera module to determine, based on operations of the focusing motor, a volumetric property of the holding area and perform a set of analytic processes on at least a portion of the captured imagery of the holding area to determine one or more properties of the biological specimen.