Which of the following is NOT one of the three clues in the Horizontal Gaze Nystagmus test?

The Horizontal Gaze Nystagmus (HGN) test is designed to detect signs of impairment by observing the eyes of an individual as they follow a moving object, typically a pen or a finger. The three established clues that indicate potential impairment during this test include:

1. The Lack of Smooth Pursuit: This clue refers to the inability of the eye to smoothly follow the object being observed, which can suggest a level of impairment.

2. Distinct and Sustained Nystagmus at Maximum Deviation: This occurs when the eyes exhibit noticeable jerking (nystagmus) when looking at the object at an extreme angle, indicating impairment.

3. Onset of Nystagmus Prior to 45 degrees: This clue involves the appearance of nystagmus before the eyes reach a 45-degree angle while tracking the object, which can also indicate intoxication or impairment.

The identified option regarding Delayed Response Time is not one of the recognized clues in the HGN test. While a delay in response can be indicative of impairment in other contexts, it is not a specific criterion utilized in the standardized protocol of the HGN test. Thus, recognizing this distinction helps understand the specific focus of this assessment in evaluating sobriety