Unit abbreviations

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Abbreviation
cc
dL
g
gr
IU; i.u.
kg
L
m
mcg or µg
mEq
mg
mL
ng
pg
pmol
/
Term
cubic centimeter
deciliter
gram
grain
international units
kilogram, kilo
Liter
milli
microgram
milliequivalent
milligram
millliliter
nanogram
picogram
picomole
per
Abbreviations are the same for both the singular and plural forms




International Units
In pharmacology an International Unit is the quantity of a
substance, such as a vitamin, hormone, or toxin, that produces a
specified effect when tested according to an internationally
accepted biological procedure. For certain substances, the IU has
been identified with a weight of a particular purified form of the
material.

For Vitamin A, 1 i.u. = 0.3 µg retinol, 3.6 µg b-carotene, or 7.2 µg
other vitamin A carotenoids

For Vitamin D, 1 i.u. = 0.025 µg cholecalciferol

For Vitamin E, 1 i.u. = 0.67 µg natural a-tocopherol (different
conversion factors are used for different forms of vitamin E)
Equivalent
milliliter
1/10th of a liter; 100 milliliters
0.0353 of an ounce
64.8 mg (in use 60 or 65 mg)
see below
2.2 pounds
1.05 quarts
1/1000th
1/millionth of a gram
1/1000th of a gram
1/1000th of a liter
1/billionth of a gram
1/trillionth of a gram
1/trillionth of a mole
each