An assembly for collection of a blood sample includes a hydrophobic plastic tube and a non-exudable block or graft copolymer having a hydrophobic domain compatible with and interpenetrated in the matrix of the tube plastic and a hydrophilic domain which provides a hydrophilic interior wall surface to the container. The invention includes a method to make the container.
The present invention relates to a blood testing bottomed tube, which comprises a tubular member having an open one end and closed another end, and a coating layer formed on at least a part to be contacted with blood on said tubular member, said coating layer being made of a polyoxyalkylene alkyl ether and/or a polyoxyalkylene glycol ether; the present invention also relates to a stopper for a blood testing bottomed tube and a blood testing container.