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| Blood Test | Checks Blood Alcohol Content (BAC) |
| Breath Test | Checks Blood Alcohol Content (BAC) |
| Urine Test | Checks For Drug Presence |
When drivers are arrested for driving under the influence, they are required to undergo chemical testing to determine if they were indeed driving under the influence of drugs or alcohol. However, the efficacy of urine testing as evidence in DUI cases is questionable due to its potential inaccuracies.
According to California Vehicle Code Section 23152(e) VC, a urine test is considered sufficient evidence to determine if a driver was driving under the influence of drugs. Additionally, it is used in cases where an individual is suspected of driving under the combined influence of drugs and alcohol, as specified in California Vehicle Code Section 23152(f) VC.
While urine testing is considered a reliable testing source to determine drug presence in a person’s system, it is no longer appropriate for testing alcohol presence. This is because urine tends to hold a higher concentration of alcohol than blood, leading to potentially unreliable results.
In the case of urine testing for drug use in DUI cases, the results may not be accurate since urine cannot identify when the person took the drugs. For example, a person may have used drugs days before the arresting incident, leading to inactive metabolites remaining in their system that do not have any impact on their ability to be coherent at the time of their arrest.
Before administering a urine test, the arrested party must first void their bladder before taking the sample to be used for court evidence. Following California Code of Regulations Title 17, the urine sample must be collected, stored, and analyzed appropriately.
Officers must ensure that the defendant is granted sufficient privacy while giving the sample, but are permitted to take necessary precautions to prevent any alteration or contamination of the sample. However, it is important to note that if the sample is taken before the defendant has had the chance to void their bladder or less than 20 minutes after doing so, the results of the test can be deemed invalid.
For individuals who receive faulty urine tests, hiring an experienced Los Angeles DUI attorney can help invalidate the test’s results and potentially clear their name.
Overall, while urine testing can provide sufficient evidence in determining drug presence in DUI cases, it is considered an unreliable source of testing alcohol presence. As such, individuals arrested for DUI should consult with a knowledgeable DUI attorney to navigate the intricacies of urine testing for DUI cases.
| Blood Test | Checks Blood Alcohol Content (BAC) | Most accurate testing source for BAC |
| Breath Test | Checks Blood Alcohol Content (BAC) | Slightly less accurate than a blood test |
| Urine Test | Checks For Drug Presence | Can be inaccurate in determining drug use at the time of arrest |
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