How Long Does Dextroamphetamine or “Dexies” Last In Your System?

In Australia, dextroamphetamine—often called “dexies”—is a prescription medication used to treat ADHD and narcolepsy. It belongs to the amphetamine drug class, which works by increasing focus, energy, and alertness. For many Australians, it’s a crucial part of managing their daily lives.

If you’re wondering how long dextroamphetamine stays in your system, whether for a drug test or out of curiosity, this guide will explain everything you need to know.

How Long Does Dextroamphetamine Last in Your System?

The short answer is: it depends. The time dextroamphetamine stays detectable varies depending on the testing method and individual factors. Here’s a quick breakdown:

Detection Times:

• In urine: Detectable for 2 to 5 days, although sometimes as little as 1 to 4 days.
• In saliva: Detectable for up to 36 hours.

These timeframes can vary based on factors like dosage, frequency of use, metabolism, and hydration levels.

In Australia, urine tests are the most common method for workplace and other screenings, while saliva tests are often used for roadside drug testing.

Why Does It Show Up on Drug Tests?

Dextroamphetamine belongs to the amphetamine drug class, so it shows up as amphetamine on drug tests. This is normal and expected for prescribed use. However, if methamphetamine is also detected, it indicates methamphetamine use rather than just dextroamphetamine.

Drug tests for amphetamines are common in Australian workplaces, particularly in high-risk industries like construction, mining, and transport.

What Can Cause a False Positive?

Certain medications and substances can cause false positives for amphetamines. Common examples in Australia include over-the-counter cold and flu medications like Sudafed, which contains pseudoephedrine.

Other examples of substances that can lead to a false positive include:

• 4-Way Nasal Spray
• Actifed
• Certain prescription drugs metabolized into amphetamines, such as amphetaminil and captagon

If you’re taking any of these, it’s a good idea to inform the testing authority before your test.

How Drug Tests Work for Amphetamines in Australia

Drug tests in Australia often focus on amphetamines, especially in workplaces and roadside testing. The type of test used affects how long dextroamphetamine can be detected.

Types of Drug Tests:

• Urine tests: These are the most common for workplaces. The cut-off level for amphetamine-type substances is typically 300 ng/mL in on-site tests, while lab tests have stricter thresholds (e.g., 25 ng/mL for amphetamine alone).
• Saliva tests: Commonly used for roadside testing in Australia, these have shorter detection windows, with dextroamphetamine detectable for up to 36 hours.

It’s worth noting that random drug testing is more common in high-risk industries like mining, construction, and transport. If you’re taking dexies as prescribed, carrying documentation can help avoid misunderstandings.

Factors That Affect How Long Dextroamphetamine Stays in Your System

Several factors influence how long dexies remain detectable in your body. These include:

• Metabolism: People with faster metabolisms clear amphetamines from their system quicker.
• Dosage: Higher doses take longer to leave your system.
• Frequency of use: Regular users may experience longer detection times compared to occasional users.
• Hydration levels: Staying hydrated may help your body process and eliminate substances more efficiently.
• Diet and lifestyle: A healthy, active lifestyle can support your body in processing medications faster.

In Australia’s warm climate, staying hydrated is particularly important for overall health and can influence how quickly substances leave your system.

FAQs About Dextroamphetamine

How long do dexies last in your system?

Dextroamphetamine is typically detectable in urine for 2 to 5 days and in saliva for up to 36 hours. These timeframes may vary depending on factors like dosage and metabolism.

Will it show up as methamphetamine?

No, dextroamphetamine will only show up as amphetamine unless methamphetamine is also present in your system.

Can I explain my prescription to the tester?

Yes, if you’re taking dextroamphetamine as prescribed by a doctor, you can provide documentation to the testing authority. This is generally accepted in Australia for workplace and roadside testing.

Tips for Drug Test Preparation in Australia

If you’re taking dextroamphetamine and have a drug test coming up, here are some tips to help you prepare:

• Carry your prescription: Always have a copy of your prescription or a letter from your doctor on hand, especially for workplace or roadside drug tests.
• Avoid over-the-counter medications: Some Australian cold and flu medications, like Sudafed, contain pseudoephedrine and can cause false positives.
• Stay hydrated: Drink plenty of water to help your body process substances effectively.
• Inform the tester in advance: Let the testing agency know about your prescription to avoid unnecessary complications.

Final Thoughts

Understanding how long dexies stay in your system is essential for anyone taking this medication, especially in Australia where drug testing is common in workplaces and on the roads. By staying informed, carrying proper documentation, and knowing what factors affect detection times, you can approach drug tests with confidence.

If you have more questions about amphetamines or drug testing, speak with your healthcare provider or explore trusted resources for more information.