I think the official term for these samples is intra-osseous (IO) blood, and we've had similar discussions with paeds and A&E. For fluid resuscitation with no venous access the IO route is suitable, but that doesn't mean the samples are! For biochemistry they mainly need to know the potassium and the glucose, and the samples are invariably haemolysed anyway. We've suggested their priority is fluid replacement and they can send a proper venous sample later. The tests they want either won't change their immediate management or can't be reliably measured. Was anyone with a lab background involved in these resuscitation guidelines? Paul Masters ------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/