- A dictionary of medical eponyms

Barr's test

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A buccal smear test for investigation of the existence of Barr's body.

Description

Test for investigation of the existence of Barr's body. A buccal smear test, whereby cells from the patient’s mouth are taken and examined for chromosomal defects. The term is rarely used, but this test is now used extensively to screen patients, including newborn babies.

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