Abstract: An assembly comprising a holder having one open end, a double ended needle fixed to a closed end of the holder and an adapter detachably insertible into the holder, the use of the adapter of the same or varying size permitting an exchange of one fluid sample container or medicament container for another with the needle pierced into the blood vessel of the human body for injection or blood collection.

Abstract: An air-noncontact type blood sampling assembly has a blood sampling container consisting of a tubular body having at one end an elastomeric stopper sealed by a sealing member and opened at the other end and a columnar gasket having a plunger at the rear portion and slidable within said tubular body, and a cylindrical transparent holder having a piercing needle at the forward end adapted to have said sampling container inserted thereinto. Said blood sampling container is previously charged with a larger amount of blood anticoagulant than required.