Medline can be used for more than just clinical questions! - "Evaluation of an Electrochemical sensor for measuring Blood Ketones" Diabetes Care 2000, vol 23, p500-503. By a group at Hope Hospital Salford. They didn't state whether fresh whole blood was used at the bed side or aliquots taken into ?a plain tube, Li Hep, fluoride which according to the manufacturers instructions should NOT be used. This is also awkward for carrying out comparisons in the lab. Dr Fiona Ivison Dept. of Clinical Chemistry Royal Liverpool University Hospital 4th Floor Duncan Building Liverpool L7 8XP 0151 706 4287 _________________________________________________________________ Worried what your kids see online? Protect them better with MSN 8 http://join.msn.com/?page=features/parental&pgmarket=en-gb&XAPID=186&DI=1059