Can consuming a lot of sugar before a blood pressure test cause a higher blood pressure reading?

Probably not. The sugar ingestion by itself should have no effect. However if whatever you are having the sugar in also has a lot of salt, it might raise the blood poressure.

Related Questions

Can consuming a lot of sugar before a blood pressure test cause hypertension?

Not likely. Sugar consumption has little effect on blood pressure, even in a diabetic, unless that individual develops low blood volume and dehydration from extremely high blood sugars, in excess of 600-700, . Read more...
No. There is no known correlation between high glucose levels and high blood pressure. . Read more...
Not hypertension... but possibility transient elevation in blood pressure which is not same thing as hypertension. Acute hyperglycemia (very rapid rise in blood glucose) in newly diagnosed type 2 diabetic patients can cause significant hemodynamic changes including elevated systolic and diastolic blood pressure by 10 mm. This would be unlikely in a non-diabetic patient. Read more...