It does not sound like you should be worried about other charges. However.... a dui is very serious and you should hire a dui attorney asap to deal with the court and dmv cases.
Of course, every DUI case is different and you should consult an experienced DUI defense attorney in your area with questions regarding your specific case. It is always in your best interest to have a good DUI attorney represent you when you have been arrested for a DUI.
It sounds like you may have had narcotics in your system, and I agree with my colleague, that you may face additional charges. You should certainly consult a DUI attorney immediately to discuss your case. And be candid with them. We appreciate that. Good luck.
Typically the blood is tested first for just alcohol and if the test comes back positive and over 0.08%, then they charge you with a dui alcohol, if the test comes back under the limit, then the sample is then tested for one of several categories of drugs. If that test comes back over a presumptive limit then they charge you with a drug dui which is basically the same as an alcohol dui. Just remember that the drug test is not specific for any active level of drug in your system and could be comprised entirely of metabolites of the given drug which are inactive rather than positive or physchoactive.
If you have other substances in your blood it could make it more difficult to defend a DUI. It is unlikely they would add additional charges based on the blood results. Be sure to call the DMV and get a hearing date.
It is unlikely that the DA would opt to file additional charges. Further, unless the officer had some indication that you were under the influence of narcotics, he would likely not request a drug panel, and, assuming your BAC was over .08, they would proceed based on the alcohol.
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Oblique facts make clear answers difficult. If you are saying that you had some sort of drug in your system, you could very well be looking at additional charges, but it is hard to tell from your question. If they lawfully collected your blood, they can obviously test it for more than alcohol, and if the BAC comes back too low for what the cop was observing, they most certainly will test for more than alcohol. You need counsel asap. www.kennedyforlaw.com
Based upon the information you provided, it is unlikely that the district attorney would file additional charges. Unless the officer had some indication that you were under the influence of narcotics, he/she would generally not request your blood be tested for drugs. As with most criminal law matters it is best to seek the assistance of a qualified attorney to ensure you are well informed and protected throughout the process.
Unfortunately you can't roll the clock back and get a do over. Blood is always a more accurate way of determining your BAC and can also show drugs whereas a Breath Test, less reliable, can only test for alcohol. If you were taking other substances, and you gave blood, of course there is a chance of an additional charge depending upon the substance. DA's charge things they can't prove all the time. So if a drug shows up in your blood they can charge it
Thanks for your question. In most counties in Southern California, for cost/expense reasons, they don't test for any other substances unless asked by law enforcement to do so, or if your blood alcohol level is zero.
I hope this helps, and all the best to you. It's my pleasure to assist in any way that I can. Thanks.