The invention encompasses the use of a lipolytic enzyme obtainable from one of the following genera: Streptomyces, Corynebacterium and Thermobifida in various methods and uses, wherein the lipolytic enzyme hydrolyzes a glycolipid or a phospholipid or transfers an acyl group from a glycolipid or phospholipids to an acyl acceptor. The metering chamber meters the fiber received from the holding chamber, wherein the metering chamber includes at least one discharge device for advancing the fiber to diverter doors pivotally mounted at one end of the metering chamber for oscillating movement between first and second downstream delivery openings. The coded blood sub-samples are physically carried to the main laboratory for analysis.