Description
This article is from the Interpretation Of
Lab Test Profiles, by Ed Uthman uthman@neosoft.com with
numerous contributions by others.
03 UNITS OF MEASUREMENT: America against the world
American labs use a different version of the metric system than
does most of the rest of the world, which uses the Systeme
Internationale (SI). In some cases translation between the two
systems is easy, but the difference between the two is most
pronounced in measurement of chemical concentration. The
American system generally uses mass per unit volume, while SI
uses moles per unit volume. Since mass per mole varies with the
molecular weight of the analyte, conversion between American and
SI units requires many different conversion factors. Where
appropriate, in this paper SI units are given after American
units.
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