Formal discovery requests in a DUI case involving blood or urine testing

King County Criminal Defense Lawyer

In every DUI case involving blood or urine testing, your King County criminal defense lawyer will need to make formal discovery requests to obtain evidence necessary for your defense. These discovery requests often focus on the testing methods and the laboratory which processed the test. For example, your lawyer may request a “split” sample of the blood or urine sample taken from you and use the split for independent testing.
Discovery related to the testing methods and test results may include requests for:
• Information about the lab methodology used to process your sample
• Notes made by the lab analyst when processing your sample
• The actual result of your blood or urine sample
• The chromatograms from laboratory testing of your blood or urine sample
• The test results of the control samples from the batch that included your sample
• The “run list” that provides the order of testing for the samples and control samples tested in the batch that included your sample
• The chain of custody for your sample

Discovery related to the laboratory or the equipment used to process your sample may include requests for:
• Information or reports from independent reviews or proficiency tests of the laboratory’s performance
• Information or reports from internal proficiency tests conducted by the laboratory
• The instructions used by the phlebotomist who drew the blood or the technician who took the urine sample from you
• The laboratory checklists and instructions used by the technicians who processed the sample
Formal discovery requests often reveal important information. If you would like to speak with a King County criminal defense lawyer about how to uncover critical evidence in your case, please submit the Free Case Evaluation form on this page, or call or email me directly.

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