US Patent 8240187 Breath sampling device and method for using same

There is provided a breath sampling tube including an inner conduit, wherein at least a portion of the inner conduit is non-cylindrical and adapted to store liquids. There is also provided a breath sampling system including a gas analyzer and a breath sampling tube may include an inner conduit, wherein at least a portion of the inner conduit is non-cylindrical and adapted to store liquids. Also provided is a method of breath sampling including channeling breath through a tube having an inner conduit, wherein at least a portion of the inner conduit is non-cylindrical and adapted to store liquids.