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Do I have a choice of chemical tests
after I have DUI?
Which should I choose?
In most states, you have a choice -- of
breath, blood or urine (most states,
however, do not offer urinalysis). If you
choose breath, many jurisdictions permit you
to have a second test of blood or urine;
this is because a breath sample is not saved
and so cannot later be re-analyzed by the
defense.
In California, only blood or breath
are offered, unless neither are available in
which case urinalysis is possible; a blood
sample will be taken if requested after a
breath test is given.
Analysis of a blood sample is potentially
the most accurate. Breath machines are
susceptible to a number of problems
rendering them often unreliable. The least
accurate by far, however, is urinalysis.
Thus, if you are confident that you are
sober, a blood sample is the wise choice;
urine, being least accurate and most easily
impeached, is the best option if you believe
your blood-alcohol concentration is above
the legal limit.
 What is a rising BAC defense?
How reliable are those
breath tests? | 
