Most of the hospitals around here use the little machines that have been correlated with drawn lab values and calibrated frequently.They are still more inaccurate the lower the #. Sincerely, Pat in SNJ *********************************************** The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html