urate crystals stain

u·rate crys·tals stain

a stain using silver methenamine to detect crystals, which polarize light in contrast with calcium crystals; useful in diagnosing gout and kidney infarcts resulting from uric acid build-up.
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References in periodicals archive ?
If frozen sections or alcohol-fixed specimens are examined, the urate crystals stain blue with hematoxylin and are birefringent under polarized light.