Wisconsin authority figures may subject drivers suspected of DUI to blood alcohol content (BAC) level tests. One type of test considered particularly reliable is the blood alcohol test. For this, a lab technician will draw your blood and test it for alcohol levels in a lab. But these tests have weaknesses in addition to their strengths.

For example, non-alcoholic things can affect your BAC reading. People with high ketones or diabetes often get high BAC results. This also happens with individuals who have recently been taking cough syrups or drops. Other types of medication can also affect the blood.

Next, there is the fact that alcohol disperses through the blood stream over many hours. In the time it takes an officer to draw your blood for testing, your BAC level may have risen. There are cases in which a person’s BAC level was below the legal limit when driving, but rose above the limit after an officer pulled them over.

Finally, there is the potential of human error. It is not unheard of for staff to contaminate samples. They can leave them out for too long before testing. This causes blood to congeal and makes the BAC level look high. Samples handled improperly can have other particles mixed into the blood that affect the reading. In particularly busy labs, it is even possible for samples to get mixed up.

If you have any interest in reading more about DUI defense, consider taking a look at our web page. You can read about DUI laws in Wisconsin, the harsh penalties convicted drivers may face, and more.