Abstract: A method of monitoring and controlling the processing of biological samples, the method comprising the steps of: receiving (101) a plurality of sample containers, each containing biological material; assigning (102) a priority to each of the sample containers; queueing (103) the sample containers for analysis based on the assigned priorities; extracting (104) a biological sample from each of the plurality of sample containers based on said sample container's position in the queue; analysing (105) each biological sample; providing (106) either a valid result or an inconclusive result for each of the biological samples based on said analysing; for each biological sample for which an inconclusive result has been provided, assigning (109) a new priority to the respective sample container and repeating the queueing, extracting, analysing, and providing steps.