My husband's sugar level is at 2.4 tonight. Is that too low? What should we do?

Dr. David Erani


In the U.S., we measure blood glucose in milligrams per deciliter or mg/dL. A blood glucose level of less than 70 mg/dL is considered hypoglycemia. In Europe, blood glucose is measured in millimoles per liter or mmol/L. Hypoglycemia would be defined as a blood glucose level of less than 3.9 mmol/L. A blood glucose level of 2.4 mmol/L is equivalent to 43 mg/dL. That is definitely too low and would likely be associated with symptoms such as feeling nervous, shaky, sweaty, confused, or even passing out. When someone has frequent, severe hypoglycemia, however, they can lose the ability to feel these symptoms. This is dangerous because passing out may be their first symptom. The first thing you should do is check the units being reported on the meter. It is not possible to have a blood glucose level of 2.4 mg/dL. If the reading is in mmol/L, that is definitely low and would require review and likely adjustment of your husband’s medical regimen.

February 23, 2013 at 10:44 pm