An assayed glucose control produces the following results in 10 runs: 99, 99, 99, 98, 98, 98, 98, 97, 97, 97. The established range for this control is 90-92. Where does the problem lie with this control?

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An assayed glucose control produces the following results in 10 runs: 99, 99, 99, 98, 98, 98, 98, 97, 97, 97.
The established range for this control is 90-92. Where does the problem lie with this control?

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