Excerpt: The jury is still out on this one. Unlike alcohol’s standard legal blood alcohol concentration (BAC) limit of 0.08%, there still is no widely accepted standard for measuring how much THC is needed in a person’s system in order for them to be deemed legally impaired.
When considering the recent wave of states passing laws decriminalizing the use of recreational and medicinal marijuana, marijuana laws can be confusing. While marijuana can be legally be used in Michigan with a valid prescription for medicinal reasons, its recreational use and possession remains illegal. Despite its semi-legal status, it is important to remember that driving under the influence of marijuana is a criminal offense much like the act of driving under the influence of alcohol. But how much marijuana is too much?
How Much Marijuana Does a Person Need to Be “Under the Influence?”
The jury is still out on this one. Unlike alcohol’s standard legal blood alcohol concentration (BAC) limit of 0.08%, there still is no widely accepted standard for measuring how much THC is needed in a person’s system in order for them to be deemed legally impaired. While studies have shown that drivers with a THC measurement of 5-10 ng/ml tend to show a level of impairment that increases their chances of being involved in a collision, this same research indicated that smokers with a THC measurement of 5 ng/ml or less appear to have no greater risk of a collision than that of a sober driver.
How Long Is Marijuana Detectable in a Person’s System?
Yet again, there is no concrete answer. A single dose of marijuana can raise a person’s THC levels to over 100 ng/ml no more than 10 minutes after smoking, though these levels can drop rapidly to less than 4 ng/ml within three to four hours after inhalation. Furthermore, individuals who frequently use marijuana can maintain raised levels of THC in their system for several days after last using the drug.
If you have been legally prescribed marijuana to help cope with a disease or chronic pain, these facts may be a cause for concern. It is highly recommended you avoid driving as much as possible if you have recently used marijuana, though if you absolutely must drive, always make sure you have your prescription and identification with you.
Facing Drugged Driving Charges? Call (248) 543-9000
If you have been arrested for driving under the influence (DUI) of marijuana, it is vital you retain powerful legal representation from Rasor Law Firm as soon as possible to protect your rights. Having fought and won on behalf of countless accused clients since 1994, our Royal Oak DUI lawyers can provide the aggressive advocacy you need to maximize your chances of securing a favorable outcome for your situation.
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