The US FDA’s proposed rule on laboratory-developed tests: Impacts on clinical laboratory testing

U with ogonek
Ų ų
Usage
Writing system	Latin script
Type	alphabetic
Language of origin	Chipewyan Dadibi Dalecarlian Gwichʼin Hän Iñapari Ixtlán Zapotec Kaska Lithuanian Sierra Otomi Sekani Tagish Tlingit Tutchone Winnebago
In Unicode	U+0172, U+0173
History
Development	Ų ų
Other
Writing direction	Left-to-Right
This article contains phonetic transcriptions in the International Phonetic Alphabet (IPA). For an introductory guide on IPA symbols, see Help:IPA. For the distinction between [ ], / / and ⟨ ⟩, see IPA § Brackets and transcription delimiters.

U with ogonek (majuscule: Ų, minuscule: ų) is a letter of the Latin alphabet formed by addition of the ogonek to the letter U. It is used in Lithuanian,^[1] Chipewyan, Dadibi, Dalecarlian, Gwichʼin, Hän, Iñapari, Kaska, Sierra Otomi, Sekani, Tagish, Tlingit, Tutchone, Winnebago, and Ixtlán Zapotec.

In Lithuanian, it is the 28th letter of the alphabet, and is pronounced as long close back rounded vowel ([uː]). In the past, the letter was used to denote the nasalized close back rounded vowel ([ũ]). Currently, it appears in the words that used to be nasalized in the past, for example in siųsti, which means send.^[1]

The letter also appears in various Indigenous languages of North America, which are: Chipewyan, Dadibi, Dalecarlian, Gwichʼin, Hän, Iñapari, Kaska, Sierra Otomi, Sekani, Tagish, Tlingit, Tutchone, Winnebago, and Ixtlán Zapotec. In most of them, the letter represent the nasalized close back rounded vowel ([ũ]).