BD Vacutainer Crossmatch tubes are available in plastic EDTA and plain clot activator tubes. They are used to obtain either a serum sample or a whole blood or EDTA plasma sample. A pink cap and a specialised crossmatch label, which is larger than the usual block label to allow more information to be recorded and identify BD Vacutainer crossmatch tubes. The BD Vacutainer crossmatch EDTA tube is an evacuated sterile blood collection tube for whole blood haematology determination has a K2 EDTA (spray) additive.