Missouri DWI Lab Testing is Weak on Standards

In Missouri driving while intoxicated (DWI) cases, police officers are required to follow certain standards. Standards are in place in an attempt to bring some degree of scientific certainty to testing procedures. Breath testing machines have been subject to weak oversight regarding testing standards. The result can be wrongful convictions.

The Missouri Code of State Regulations (19 CSR 25-30) specifies the standards that should be followed when testing the accuracy of breath testing devices. If the standards are not followed, no scientific accuracy can be presumed. The maintenance report, including instructions, are included in chapter 30. Lets examine the AlcoSensor IV (ASIV).

The ASIV maintenance report requires that the temperature of the ASIV be recorded when running an accuracy check. The form requires that a checkmark be placed by each item if found to be satisfactory or if within established limits. Further, an observed value is to be written in where determined.

What does that mean? In layman’s terms it means that you have to fill out the whole form and do it correctly. This includes recording a temperature on the maintenance report if it is observed. It must be entered following the appropriate checkbox near the top of the checklist. The judges, traffic commissioners, and hearing officers who review DWI cases have routinely overlooked improperly completed maintenance reports. They have not enforced the requirement that a temperature be recorded on the form if a checkmark exists. The law requires that observed values must be recorded and written-in where determined. To overlook this requirement is simply not good enough. Is it good enough for government work? Is it good enough for others? It is probably not good enough for anyone if their freedom is on the line. It is a poor state of affairs when procedures applying scientific checks are overlooked in the legal system. There is too much risk of getting it wrong.  We need to do everything we can to “get it right”.

The ASIV maintenance report temperature readings are part of the required checks essential to a machine passing its maintenance test. This issue will be ruled on soon in St. Louis County. Scientific certainty is only obtained when standards are followed precisely. Procedures must be replicated with exactness.  In order to prevent wrongful convictions and wrongful drivers license suspensions, courts must hold law enforcement accountable. Standards and procedures must be upheld fully and completely with regard to breath alcohol devices.

-John Schleiffarth

JCS Law

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John Schleiffarth

About St. Louis DWI Lawyer John C. Schleiffarth John C. Schleiffarth is a St. Louis DWI and criminal defense lawyer who has built a strong reputation for protecting the rights of drivers accused of driving while intoxicated (DWI) and driving under the influence (DUI) in Missouri. A Missouri native and founder of JCS Law, John represents clients throughout St. Louis County, St. Charles County, and the Eastern District of Missouri, providing aggressive and skilled legal defense in both state and federal courts. Focused on DWI and DUI Defense A large part of John’s practice centers on defending individuals accused of DWI or DUI. He regularly challenges breath and blood test results, probable-cause stops, and search-warrant procedures—especially as “No-Refusal” policies expand in Missouri. John’s goal is simple: to protect his clients’ licenses, freedom, and futures while ensuring that law enforcement follows the Constitution every step of the way. Beyond DWI defense, John also handles drug possession and trafficking, theft, sex offenses, assault, and other serious misdemeanor and felony cases. Education and Legal Background B.A., International Law and Diplomacy – Brigham Young University (2005) J.D. – Dwayne O. Andreas School of Law, Barry University (2010) He is admitted to practice in Missouri, the U.S. District Court for the Eastern District of Missouri, and the U.S. District Court for the Southern District of Illinois. Since opening his own firm, John has dedicated his career exclusively to criminal defense and DWI law. Awards and Professional Memberships John’s courtroom success and client advocacy have earned recognition from several national legal organizations, including: The National Trial Lawyers: Top 40 Under 40 The National Trial Lawyers: Top 100 Best Lawyers in America Avvo 10.0 “Superb” Rating He is also a member of the National Association of Criminal Defense Lawyers (NACDL), the National College for DUI Defense, the Federal Bar Association, and the Bar Association of Metropolitan St. Louis. A Trusted Advocate for Missouri Drivers If you’ve been arrested for DWI in St. Louis or anywhere in Missouri, don’t face the system alone. Contact attorney John Schleiffarth at JCS Law for experienced representation from a proven DWI defense lawyer who understands Missouri’s drunk-driving laws inside and out. Call (314) 561-9690 www.jcscriminaldefense.com

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