blanch test

BLANCH TEST: Blanching of the finger after compressionBLANCH TEST: Color returns to the digit; the normal delay in color return is 2 seconds or less

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: illustration