At what temperature range should unopened insulin vials be stored to maintain potency?
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A
36°F to 46°F (2°C to 8°C) in the refrigerator
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B
Below 32°F (0°C) in the freezer
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C
68°F to 77°F (20°C to 25°C) at room temperature
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D
Above 85°F (29°C) in a warm cabinet