The Coffey Firm Blog Archives - DWI Attorneys and Criminal Defense Lawyers https://mimicoffey.com/category/blog/ Experienced DWI Attorneys and Criminal Defense Lawyers Tue, 21 Oct 2025 13:53:15 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://mimicoffey.com/wp-content/uploads/2023/10/favicon-2-100x100.png The Coffey Firm Blog Archives - DWI Attorneys and Criminal Defense Lawyers https://mimicoffey.com/category/blog/ 32 32 Blood Composition Affects Breath Tests https://mimicoffey.com/blood-composition-affects-breath-tests/?utm_source=rss&utm_medium=rss&utm_campaign=blood-composition-affects-breath-tests Tue, 21 Oct 2025 13:53:15 +0000 https://mimicoffey.com/?p=9586 The breath test result is predicated on a blood to breath partition ratio of 2100:1.  Many folks do not have this exact ratio.  Different countries use different ratios. A person who is anemic, has less red blood cells.  Different cancers and health conditions contribute to a different blood breath partition ratio.  Of course, these factors are never taken into account when a subject is arrested and a breath test result...

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]]> The breath test result is predicated on a blood to breath partition ratio of 2100:1.  Many folks do not have this exact ratio.  Different countries use different ratios. A person who is anemic, has less red blood cells.  Different cancers and health conditions contribute to a different blood breath partition ratio.  Of course, these factors are never taken into account when a subject is arrested and a breath test result is reported.  One of my favorite Not Guilty occurred when I educated the jury on my client’s blood cancer that affected his blood composition and hence is inaccurate breath test result.  When the case is otherwise triable, never take a breath test at face value.

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