250 is OK: 250 for a short time on prednisone is usually nothing to worry about. Any change in sugar levels which causes you symptoms is a concern. If you are not able to drink enough fluids to keep up with the amount you loose in urine then your sugar levels require treatment. If you run over 400 there is a higher risk of acid buildup or dehydration. Over 600 the risk goes much higher
Answered 3/28/2015
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