Abstract: A lid assembly for a sample tube, for collecting magnetic beads from the sample tube and subsequently releasing said beads, the lid assembly comprising: a closure part including means for removably attaching the closure part to the opening of the sample tube, to close the sample tube, and a bead-collecting platform arranged to locate within or above the opening of the sample tube when the closure part is attached to the sample tube, wherein the bead-collecting platform has a bead-collecting surface on one side, for coming into contact with liquid in the sample tube during use, and a magnet-receiving cavity on the other side, behind the bead-collecting surface; and a magnet-bearing part comprising a magnet, wherein the magnet is removably insertable into the magnet-receiving cavity, towards the bead-collecting surface, such that, when the magnet is present within the magnet-receiving cavity, the magnet is capable of holding magnetic beads against the bead-collecting surface, and when the magnet is not present

Abstract: The present application relates to processor-implemented methods for determining a diagnostic outcome comprising receiving signals generated by an array of electro-chemical sensors in solution with a biological sample from a subject, each sensor of the array of electro-chemical sensors configured to generate a signal in response to one or more amplification reactions occurring in the solution, the one or more amplification reactions being indicative of the presence of an RNA host-response; processing the signals received from the array of electro-chemical sensors; based on the processing, assigning at least one value to the sample, the at least one value being indicative of a likelihood of the diagnostic outcome; based on the at least one assigned value, determining the diagnostic outcome.