are at the officer's discretion. They can also administer other tests including blood and urine tests. In other countries (for example The Netherlands), only breathalizer and blood testing is used. Standardized tests that can be performed in the US include: One-leg stand test Walk and turn test HGN (eye) test (horizontal gaze nystagmus test) Non-standardized tests include: Romberg's test Finger-to-nose test Finger-count test Hand pat test Alphabet recitation test Counting numbers backwards Since these tests rely on cooperation of the subject, the final result often depends on the presiding officer's interpretation. There are many factors that can lead to inaccuracies in sobriety testing including orthopedic or neurologic conditions, and fatigue. See also Sober living environment Temperance and Good Citizenship Day References External links Sobriety information website with links to several recovery organizations Sobriety information website and forum for Alcoholics and Narcotics Anonymous Wiktionary on the word Alcohol abuse Drug rehabilitation