What Is a Blood Alcohol Test in a San Diego DUI Charge? - Anna Yum

From Law Offices of Anna R. Yum – What Is a Blood Alcohol Test in a San Diego DUI Charge? explains how blood alcohol tests are used in San Diego DUI cases and why these results are not always as straightforward as they seem. The podcast breaks down how blood tests measure blood alcohol content (BAC) under California Vehicle Code Section 23152 and why a BAC of 0.08% or higher can lead to DUI charges for standard drivers, with lower limits for commercial drivers and drivers under 21.

This episode explores how blood alcohol tests work, including the role of field sobriety tests, breath tests, and chemical testing after arrest. It discusses California’s implied consent laws under Vehicle Code Section 23612, what happens if a driver refuses testing, and when a blood test versus a breath test may be offered. The podcast also explains why blood tests are commonly used, how samples are collected and analyzed, and how delays, rising blood alcohol levels, and biological factors can affect results.

Listeners will learn why Title 17 regulations are critical in DUI blood testing and how violations can undermine the prosecution’s case. The discussion covers proper blood draw procedures, non-alcohol sterilization, preservatives and anticoagulants, chain of custody requirements, refrigeration, calibration of testing equipment, and the right to preserved samples for independent testing. The podcast also addresses warrant requirements for blood draws, Fourth Amendment protections, and key rulings such as Birchfield v. North Dakota.

The episode concludes with an in-depth look at DUI defense strategies used by Anna R. Yum and the Law Offices of Anna R. Yum, including blood split motions, independent lab analysis, contamination claims, fermentation issues, and challenges to retrograde extrapolation. Serving clients throughout San Diego County, the firm focuses on protecting drivers’ rights, challenging improper procedures, and defending against DUI charges based on questionable blood alcohol test results.

Law Offices of Anna R. Yum

501 W Broadway Ste 1660, San Diego, CA 92101, United States

(619) 233-4433

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