Microgram

In the metric system, a microgram or microgramme is a unit of mass equal to one millionth (1×10−6) of a gram. The unit symbol is μg according to the International System of Units; the recommended symbol in the United States and United Kingdom when communicating medical information is mcg. In μg the prefix symbol for micro- is the Greek letter μ (Mu).

"μg" redirects here. For microgravity environment, see Micro-g environment.
Microgram
Unit systemSI
Unit ofmass
Symbolμg 

Abbreviation and symbol confusion

When the Greek lowercase “μ” (Mu) in the symbol μg is typographically unavailable, it is occasionally—although not properly—replaced by the Latin lowercase “u”.

The United States-based Institute for Safe Medication Practices (ISMP) and the U.S. Food and Drug Administration (FDA) recommend that the symbol μg should not be used when communicating medical information due to the risk that the prefix μ (micro-) might be misread as the prefix m (milli-), resulting in a thousandfold overdose. The non-SI symbol mcg is recommended instead.[1] However, the abbreviation mcg is also the symbol for an obsolete CGS unit of measure known as millicentigram, which is equal to 10 μg.

In the UK, the μg symbol is the widely recognized method of identifying micrograms.[2]

Gamma (symbol: γ) is a deprecated non-SI unit of mass equal to one microgram.[3]

The "microgram" symbol is encoded by Unicode at code point U+338D ㎍ SQUARE MU G ❰ ㎍ ❱.[4]

gollark: Also, proprietary programs *may* use incompatible library versions and stuff sometimes, but you can probably get around that.
gollark: You may also need to turn off Secure Boot though, and x86 tablets often have UEFI weirdness.
gollark: I'm not sure if distro installers detect this, but it's not too hard to install the right bootloader manually.
gollark: This may be harder on those old x86 tablets because they have a weird setup with 32-bit UEFI and 64-bit processors for some odd reason.
gollark: *Can* you do that without dying horribly? Supernovae are pretty energetic, and all.

See also

References
  1. "ISMP's List of Error-Prone Abbreviations, Symbols, and Dose Designations". ISMP. Retrieved 2018-03-28.
  2. "List of UK NHS Dose Designations". NHS. Retrieved 2018-12-28.
  3. NIST Handbook 133 - 2018, Appendix E. General Tables of Units of Measurement, page 159 (17)
  4. Unicode Consortium (2019). "The Unicode Standard 12.0 – CJK Compatibility ❰ Range: 3300—33FF ❱" (PDF). Unicode.org. Retrieved May 24, 2019.
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