Los Angeles, CA – October 9, 2025 – As fentanyl-related overdoses continue to surge across the country, understanding how long this synthetic opioid remains in the body has become a matter of life and death. Haven Hills Rehab, a leading luxury addiction treatment center in Los Angeles, is shedding light on the critical detection windows of fentanyl, the risks of even minimal exposure, and the importance of medically supervised detox.

One of the various reasons that fentanyl is dangerous is that it is a synthetic opioid up to 100 times more potent than morphine and 50 times stronger than heroin. Just two milligrams—equivalent to a few grains of salt—can be fatal. Its fast-acting nature and high potency make it one of the deadliest drugs circulating today.

Detection Windows: How Fentanyl Is Found in the Body

The ability to detect fentanyl depends on the testing method and frequency of use:

• Urine Tests: Fentanyl can typically be detected in urine for 1 to 3 days after last use, though heavy users may test positive for longer.
• Blood Tests: These can detect fentanyl for up to 12 hours, making them useful in emergency or hospital settings.
• Hair Follicle Tests: Fentanyl use may be traceable in hair for up to 90 days, offering the longest detection window and helping identify long-term use patterns.

Understanding how long fentanyl stays in your system is essential for individuals seeking fentanyl addiction treatment or undergoing drug screenings. The detection timeline can vary based on metabolism, age, body mass, hydration levels, and whether the drug was smoked, snorted, or injected.

Use Patterns Influence How Long Fentanyl Stays in the System

The duration fentanyl remains in the body is influenced by several factors, including dosage, frequency of use, individual metabolism, and whether it’s used with other substances. Chronic users may retain traces of fentanyl much longer than individuals who have used it once or twice.

Risks: Why Even One Use Can Be Fatal

Fentanyl attaches to opioid receptors in the brain, slowing breathing and heart rate—often to the point of death. Unlike other opioids, fentanyl is commonly mixed into counterfeit pills or street drugs without the user’s knowledge, dramatically increasing the risk of accidental overdose.

“Fentanyl doesn’t give you a second chance,” said Dr. Darren Lipshitz, Medical Director at Haven Hills Rehab. “People assume they’ll have time to notice the signs of overdose or addiction, but with fentanyl, it often happens too fast. Education and timely treatment are the most powerful tools we have.”

Common fentanyl withdrawal symptoms can include nausea, muscle aches, anxiety, insomnia, and intense cravings. These symptoms can make quitting especially difficult without medical support.

Treatment: Medically Supervised Detox Saves Lives

Haven Hills Rehab offers medically supervised detox tailored specifically to fentanyl addiction. Located in the heart of Encino, CA, the center provides a serene, private, and upscale environment designed for healing and recovery. On-site clinicians monitor patients 24/7 to manage withdrawal symptoms safely and lay the foundation for long-term recovery.

“We know that addiction is deeply personal, and so is recovery,” said Andrew Dimian, Communications Director at Haven Hills. “Our program focuses on medical stabilization, psychological support, and a compassionate, customized treatment plan for every client.”

Whether you’re dealing with short-term fentanyl use or long-term dependency, finding professional help can be life-saving. Seeking fentanyl detox in Los Angeles through a reputable facility can increase the chances of successful, lasting recovery.

Take the First Step Today

If you or a loved one is struggling with fentanyl use, there is hope—and help. Early intervention can mean the difference between life and death.

Call Haven Hills Rehab at (818) 456-1927 or visit havenhillsrehab.com

About Haven Hills Rehab

Haven Hills Rehab is a premier luxury addiction treatment center located in Los Angeles, CA. With a team of board-certified medical professionals and experienced therapists, the facility offers detox, residential, and outpatient programs for a range of substance use disorders. The center is committed to delivering world-class care in a safe, supportive, and healing environment.

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Company Name: Haven Hills Rehab
Contact Person: Andrew Dimian, Communications Director
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Phone: (818) 456-1927
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Website: https://havenhillsrehab.com/