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SFTS
Instructions and Clues
Question | Answer |
---|---|
Instructions for HGN | "Stand with your feet together and your arms down at your sides. Follow the tip of my pen with your eyes only; do not move your head. Keep looking at the pen until told to the test is over. Do you understand? |
Where do you hold the pen? | 12"-15" slightly above eye level |
What are you looking for in medical checks? | Similar pupil size Equal tracking (2 passes) No resting nystagmus |
Which eye do you start with first? | left eye first |
What are the clues for HGN? | Lack of smooth pursuit Distinct and Sustained Nystagmus at maximum deviation Onset of nystagmus prior to 45 degrees |
How do you test for Vertical Nystagmus? | Hold at maximum vertical for a MINIMUM of 4 seconds |
What does Vertical Nystagmus indicate? | A high dose of alcohol for this subject and/or presence of CNS depressants, inhalants or dissociative anesthetics |
How many clues are needed with HGN to indicate BAC of .08 or more? | 4 |
What side of the suspect should you stand on, while conducting the Walk and Turn test? | To the right of the suspect |
How many clues do you need for the Walk & Turn test to indicate a BAC of .08 or more? | 2 out of 8 |
What are the first 2 potential clues in the instructional phase? (Walk & Turn) | Starts too soon Loses balance |
What are the other 6 clues? (Walk & Turn) | Arms raised away from the side by over 6" for balance Misses heel-to-toe step by over one half inch Steps off-line Wrong number of steps Improper turn Stops walking |
How many clues are needed to indicate a BAC of .08 or more in the One-Leg stand? | 2 out of 4 |
What are the 4 clues in the One-Leg stand? | Puts foot down Uses arms to balance (raises arm(s) over 6" from their side) Sways Hopping |