MEMBRANE-BASED DOUBLE-LAYER TUBE FOR SAMPLE COLLECTIONS

摘要

The fluid sample collection device is adapted to collect and separate a f luid sample into constituent parts such as separating plasma or serum from a blood sample. The device includes an evacuated outer container and an inner container. The outer container has a first open end and a second closed end . A pierceable closure closes the first open end thereby defining a first in terior chamber. The inner container is contained within the outer container and separates the first interior chamber into an upper chamber portion and l ower chamber portion in fluid communication. The inner container defines a s econd interior chamber separated from the lower chamber portion through a po rous membrane. A port is provided for placing the second interior chamber in fluid communication with the first interior chamber. Another aspect of the device relates to a method of using the device to separate plasma or serum f rom a blood sample.