How Long Do Drugs Stay in your Saliva?

drug testing bottle

In New South Wales (NSW), the police have the power to conduct drug tests on drivers, both on the roadside and at police stations, in order to detect the presence of certain drugs in a person’s system. The tests are typically conducted using a saliva sample, which is analysed for the presence of drugs such as THC (the active ingredient in marijuana), cocaine, amphetamines, and opioids.


The police can conduct drug tests in a number of situations, including during random breath testing (RBT) operations or if they suspect that a driver may be under the influence of drugs. The tests are designed to identify drivers who are impaired by drugs and may pose a risk to themselves and others on the road.


If a driver tests positive for drugs, they may face penalties such as fines, license suspension, and even criminal charges. In some cases, the police may also impound the driver’s vehicle. The police must follow specific guidelines when conducting drug tests, including following proper testing procedures and ensuring that drivers are informed of their rights.


Drugs can stay in your saliva for different lengths of time, depending on the type of drug and various other factors. Some drugs, like marijuana, can be detected in saliva for longer periods than others.


Here are some estimated detection times for common drugs in saliva:




Up to 24-48 hours, or even longer for heavy users.




Up to 1-2 days.




Up to 2-3 days.




Up to 1-2 days.




Up to 2-3 days.


These are just general estimates, and detection times can vary based on factors such as individual metabolism, frequency and amount of drug use, and the sensitivity of the drug test being used. Drinking plenty of water and practicing good oral hygiene (such as brushing and flossing regularly) can also help to flush out drugs from your saliva.

How Long does Weed stay in your System?

Marijuana, or weed, can stay in your system for different lengths of time depending on several factors, including how much you’ve used, how often you use it, and your body’s metabolism.


Here are some rough estimates for how long weed can be detected in various parts of your body:




Up to 36 hours.




Up to 30 days for heavy users, or as little as 2-3 days for infrequent users.




Up to 90 days, or even longer for heavy users.


Again, these are just general estimates, and detection times can vary based on individual factors. It’s also worth noting that there are many factors that can affect how quickly your body metabolises marijuana, including your age, weight, and overall health. Some people may be able to clear the drug from their system more quickly than others, while some may take longer.

How Long Does MDMA stay in your System?

MDMA, commonly known as ecstasy, is a popular party drug that produces euphoria, increased energy, and heightened senses. However, its effects are short-lived, and the drug can remain in your system for a long time after use.


The detection time for MDMA varies depending on several factors, including the amount consumed, frequency of use, and individual metabolism. Here are some rough estimates for how long MDMA can be detected in various parts of the body:


Blood Tests


Up to 24-48 hours


Urine Tests


Up to 3-4 days


Hair Follicle


Up to 90 days

How Long Does Cocaine stay in your Saliva?

Cocaine can be detected in saliva for up to 1-2 days after use by saliva testing, depending on the amount consumed and individual factors.

Urine Drug Test Detection Times Australia

In general, most drugs can be detected in urine for up to 2-4 days after use, although this can vary based on the drug and individual factors. Some drugs, such as marijuana, can be detected in urine for much longer periods, up to 30 days for heavy users.

How Long Does Valium Stay in your Urine?

Valium or its active ingredient Diazepam, is a benzodiazepine commonly used to treat anxiety and other conditions. Diazepam, its active ingredient, can be detected in urine for up to 7-10 days after use, depending on individual factors such as age, weight, and metabolism.

Does CBD show up in a Drug Test Australia?

CBD, or cannabidiol (cbd oil), is a non-psychoactive compound found in cannabis plants. While CBD products contain only trace amounts of THC, the psychoactive compound in cannabis, some drug tests can detect even low levels of the presence of THC. Therefore, it’s possible for CBD products to result in a positive drug test. However, many drug tests do not specifically test for CBD, so it’s important to check with your employer or testing agency to determine their policies.


If you’re facing drug testing in NSW, it’s important to understand your legal rights and speak to Drug Offence Lawyers in Sydney if you have any concerns about the testing process or the potential consequences of a positive test result.

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