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Walgreens

Walgreens tells Theranos to stop using lab under scrutiny

Walgreens has told blood-testing startup Theranos to stop sending samples collected at the drugstore chain's stores to a testing facility that drew regulatory scrutiny over possible patient risks.

The company said Thursday that it told Theranos to either send tests to a certified lab in the Phoenix area that Theranos runs or to an accredited third-party lab. The decision only affects 40 stores in Arizona and a Palo Alto, California, store, where Walgreens has suspended Theranos laboratory services.

Walgreens Boots Alliance Inc. runs more than 8,000 U.S. locations as the nation's largest drugstore chain.

Inspectors for the Centers for Medicare and Medicaid Services...

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