Method for removing a fluid substance from a collection device

摘要: The present invention relates to a cap which can form an essentially leak-proof seal with vessel capable of receiving fluid specimens for clinical analysis and diagnosis. To minimize potentially contaminating contact between the specimen humans or environment, features is penetrable by plastic pipette tip other transfer device, may include plurality striations were discovered further improve penetrability cap. In this way, substances be dispensed into withdrawn from without having physically separate vessel. Also featured are devices caps surface ribs and/or grooves aid in creating passageways venting displaced air penetrated collection device.