DWI & Blood Tests

Blood samples are analyzed for alcohol content using a Gas Chromatography.? More specifically, it is a?Head Space Gas Chromatograph with Flame Ionization Detector.

The Good & The Bad

The good thing about them is that they can be reliable if the test procedure is followed and the machine is probably maintained.

The bad thing about them is that they can be reliable?only?if the test procedure is followed and the machine is probably maintained.

Many people, including criminal defense attorneys, think that a blood test is better and more reliable.? This isn?t true.? Calling it a ?blood test? isn?t even very accurate.? The blood is heated up and then the air above the blood is tested for alcohol concentration.? The same issues that arise with temperature, calibration and human error with the breath test machine apply to a blood test.

Clinical Tests Comparing Blood & Breath Results

It probably comes as no surprise to you that clinical tests involving the taken of a person?s breath sample and blood sample results in the conclusion of different blood alcohol contents.? Jones, A. W., et al. ?Measuring ethanol in blood and breath for legal purposes: variability between laboratories and between breath-test instruments.??Clinical Chemistry?38.5 (1992): 743-747.

A Message from the Daly Campbell Law Firm:

We hope you and your loved ones have remained healthy and safe this year as we all wade through the Coronavirus pandemic together.

In lieu of in-person meetings, we are encouraging you to schedule a virtual meeting with us either online through our website or by telephone.

Both current clients and anyone in need of legal assistance can schedule a virtual meeting with us.   Once you schedule the meeting, all you have to do is follow the link we will email to you on either a smart phone or a computer with a microphone at the time you arranged the meeting.

If you need any assistance, please do not hesitate to call us at 281-488-1500.