When you’re arrested and charged with driving under the influence
of drugs or alcohol, you are required to submit to a chemical test to
determine your intoxication level. Naturally, as someone who is expecting
a fair trial, you would expect the evidence obtained this way to have
integrity and be free from defects or outside factors that could influence
the results against you. This brings up a fairly interesting question:
are these tests actually accurate?
The answer may surprise you: you may not realize just how wildly inaccurate
a chemical test could be, particularly if testing procedures and protocols
aren’t followed correctly. On this blog, our Reno DUI lawyer will
discuss a few of the ways in which your test could be flawed and your
results inaccurate, thus calling into question the legitimacy of the evidence.
Three Types of Chemical Tests
There are three types of chemical tests that authorities can use for the
purposes of determining your intoxication level: blood, breath, and urine.
For drug-related DUI charges, only blood and urine tests can be used since
breathalyzers aren’t capable of picking up traces of intoxicating
compounds, like THC from marijuana. Instead, breathalyzers can only be
used for alcohol-related DUI charges.
Inherently, there are some issues with each type of test that could jeopardize
its accuracy. Let’s look at them a little bit further.
Blood Tests
Blood tests are often not the method of testing that law enforcement prefer
to use. For starters, it’s invasive, and requires a lot of care
and caution in order to properly test someone. If someone is acting intoxicated,
properly administering a blood test can be immensely difficult. Assuming
the blood samples are drawn properly, the samples must be handled carefully
and sent to a laboratory for testing. During transport, the samples must
be kept at a constant temperature, must avoid being heavily shaken or
disturbed, and plenty of other requirements must be met as well. In short:
a lot can go wrong.
Blood tests also usually take anywhere from a few days to a week or so
to get results back, by which time you’ll have needed to get a considerable
amount of preparation done for your case. As such, both sides usually
agree this isn’t the ideal way of testing for intoxication.
Urine Tests
Urine tests are disliked for many of the same reasons that blood tests
aren’t preferred: they’re invasive, require laboratory testing,
and in many cases highly unsanitary, requiring careful handling. While
these tests are often preferred by people who wish to avoid being stuck
with a needle, they are also notoriously less accurate than blood tests
as well, particularly at determining the
current amount of a substance in the body. Even if someone was previously intoxicated
and has waited until they “sobered up” before driving, their
urine test could still contain immense amounts of alcohol because their
liver has cleaned it up and your body is waiting to dispose of it.
Urine tests may also show illegal amounts of drug intoxicants for as much
as several days or even weeks after the drug use occurred and the intoxication
has passed. Both of these factors could contribute to evidence against
someone being inconclusive.
Breath Tests
Breath tests are the preferred method of chemical testing for alcohol-induced
intoxication. These tests are non-invasive, quick to conduct, inexpensive,
simple, and usually yield pretty accurate results as long as standard
protocols are followed.
However, as with the other two tests, they’re also not perfect. Breath
tests could be swayed heavily by mouth alcohol, which is traces of alcohol
still in your mouth that have not yet been absorbed by your body (and
thus, can’t contribute to your intoxication levels). Mouth alcohol
can cause someone who is not intoxicated to blow a breathalyzer test that’s
over the legal limit, even though they’ve never committed a crime.
Furthermore, breathalyzer machines need to be properly calibrated to work
correctly and yield accurate results, and improper maintenance or poor
calibration can throw all of the evidence collected against you into question,
possibly even resulting in it being thrown out.
Talk to a Reno DUI attorney from the Law Offices of Kenneth A. Stover today by dialing (775) 502-1575 if you have been arrested and charged
with driving under the influence.