Which of the following is NOT a feature of gestational hypertension?

Gestational hypertension is characterized primarily by new onset hypertension that occurs after 20 weeks of gestation. A defining feature is the elevation of blood pressure (typically defined as 140/90 mmHg or greater) that occurs without the presence of proteinuria or other signs of severe preeclampsia.

A significant point of differentiating gestational hypertension from preeclampsia is that proteinuria is not a feature of gestational hypertension; it is associated with preeclampsia. Diagnosis criteria can include obtaining two separate blood pressure readings that confirm the presence of high blood pressure taken at least four hours apart, which is a diagnostic measure intended to confirm the diagnosis rather than just sporadic high readings.

Since proteinuria is not involved in gestational hypertension, identifying it as a feature would inaccurately classify the condition and misrepresent its clinical characteristics. Thus, the correct answer stands out as accurate in that proteinuria does not belong to the features of gestational hypertension.