- A dictionary of medical eponyms

Evans blue

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A diazo dye which has been the principal method of determining blood volume in humans and animals for over eighty years.

Description

A diazo dye occurring as a blue-green powder, very soluble in water. It is used intravenously as a diagnostic agent; combines with albumin and has been the principal method of determining blood volume in humans and animals for over eighty years. A vital stain for following diffusion through blood vessel walls. Can be used on connective tissue for the marking of neoplasms; shows cancerogenous effect in animal experiments. Published in 1915.

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