title: Metrication of clinical laboratory data in SI units.
abstract: The development and general concepts of the Système International d'Unités (SI units) are discussed. The basic and derived quantities and units of the SI used for clinical laboratory data are reviewed. Ranges of normal values for a number of body fluid constituents are given in the units in current general use and in SI units, with corresponding conversion factors.
mesh_terms: D001315:Australia; D002624:Chemistry, Clinical; D005060:Europe; D006405:Hematology; D049672:History, 19th Century; D049673:History, 20th Century; D007753:Laboratories; D008792:Metric System / Q000266:history; D008829:Microbiology; D008853:Microscopy; D010336:Pathology; D009626:Terminology as Topic; D006113:United Kingdom; D014481:United States