blanch test
blanch test
, blanching testA test of the integrity of the circulation performed by applying and then quickly releasing pressure to a fingernail or toenail. After losing color, the blanched nail normally regains a pink appearance within 2 seconds or less. Failure to do so suggests impaired blood flow to the extremity.
Synonym: capillary nail refill test See: illustrationMedical Dictionary, © 2009 Farlex and Partners