There are two units of measurement for blood glucose measurement mmol/L and mg/dL.
The image can be true for both as 37 is really bad in both (super high and super low).
Bad as in get someone to take you to a place where you can be treated ASAP.
For me going low feels really bad, and way worse than high, but I notice long before I reach 37 mg/dL(2 mmol/L).
