Specimen collection tube assembly with differentiated components

摘要

A tube assembly useful for the collection of body fluid samples includes a first elongate tube with an opened end and an inside diameter and a closed end section with an outside diameter. The tubes may be formed of different respective materials. The first tube includes a receptacle therefor for receiving a fluid sample that is accessible from the open end. A second elongate tube, substantially identical to the first tube, is included in the tube assembly. The closed end section outside diameter is less than the inside diameter of the opened end of the second tube. The first tube closed end section is conjugately disposed in the open end of the second tube so that the first tube and second tube are substantially axially aligned, forming a single tube assembly.