blanch test

BLANCH TEST: Blanching of the finger after compression

BLANCH TEST: Color returns to the digit; the normal delay in color return is 2 seconds or less

blanch test

, blanching test

A 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

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Dysplastic tissues with significant keratinization (leukoplakia) can exhibit increased whiteness with loss of fluorescence (darkness) around the periphery of the lesion.[sup][9],[10] All the cases which appeared dark or brownish under VELscope were subjected to blanch test which involves rubbing and pressing lesion with mirror end and rescrutinizing the lesion.

Comparative study on the efficacy of tissue autofluorescence (visually enhanced lesion scope) and toluidine blue as a screening method in oral potentially malignant and malignant lesions

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