We use TEG at our hospital but so far they have shown no proof that it reduces blood usage. The TEG is interpreted on the spot by the anesthesiologist or surgeon, but mostly anesthesiology uses it. The different docs in anesth. do not routinely use it across the board, either. Only some of them use it. The hospital where I came from had TEG usage as well despite a big effort of the Lab Dir. who opposed it (he was a coagulation specialist). It is a passing fad and the prinicple of the TEG has been around for decades.