Which breath test type is conducted without a tube attachment?

The passive breath test is conducted without the need for a tube attachment, making it distinct from the standard breath test. In a passive breath test, the individual does not have to blow directly into a device; instead, they simply exhale near the device, which detects the presence of alcohol in their breath without requiring a physical contact point like a tube. This method is often used by law enforcement for preliminary screenings to quickly gauge whether a person may be under the influence.

In contrast, the standard breath test does require a tube attachment where the subject actively blows into the device to provide a sample for alcohol analysis. The field sobriety test, while also a measure of impairment, involves physical coordination tests rather than breath analysis. Lastly, the blood alcohol concentration test involves a blood sample and is not a breath test at all. These distinctions help clarify why the passive breath test is unique in its operation compared to the other options listed.