blanch test
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BLANCH TEST: Blanching of the finger after compression
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BLANCH 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