NEW DELHI—Workers at a Ranbaxy Ltd. drug plant repeatedly fudged test results to make it appear that raw materials and active pharmaceutical ingredients met required standards when they didn't, according to a report by U.S. Food and Drug Administration inspectors.
FDA officials visited Ranbaxy's Toansa factory in the northwestern Indian state of Punjab in early January and said they discovered multiple instances of workers retesting "until acceptable results are obtained" and deleting evidence of failed tests.
Last week, the FDA banned drug ingredients from Ranbaxy's Toansa plant in the U.S. market—a serious blow for Ranbaxy, since Toansa supplies many of the critical ingredients used in the company's generic drugs.
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