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Medical Term:

Harris and Ray test

Pronunciation: ha'ris ra

Definition: an obsolete test for vitamin C in the urine; a microtitration test of the urine against a known amount of 0.05% aqueous solution of the dye 2,6-dichloroindophenol in 10% acetic acid (usually 0.05 mL of dye is used, roughly equivalent to 0.025 mg of ascorbic acid).

Synonym(s): Harris test

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