One dose of morphine will typically stay in the blood for about 15 hours, though it can range from 12-15 hours. However, it may be detectable in urine for several days. Everyone processes it at different rates, and there are many factors that affect each person’s experience. The testing method, your metabolism, and your age can all influence the detection of morphine. Knowing how quickly your body processes morphine can help your provider determine the right dosage amount.
Morphine is an opioid pain medication that may be prescribed for acute pain or chronic pain when other treatments aren’t suitable. It creates a chemical dependency when used consistently, and it can lead to addiction.
Most standard opioid panels used in workplaces, recovery programs, and medical settings will detect morphine. A single dose of morphine will clear out of your system relatively quickly compared to a person who uses it consistently. If you have a prescription, let the test provider know.
In this article, we’ll talk about how long it takes your body to eliminate one dose of morphine, the time frames of different detection methods, and other factors that can come into play.
The science behind morphine elimination
After morphine is absorbed into the blood, it’s broken down by the liver into smaller molecules called metabolites. Only about 19% to 47% of a morphine dose is circulated in your system. Then, it’s filtered out by the kidneys and eliminated in your urine. Most of the original dose is excreted, either in its original form or as other metabolites.
Morphine has a half-life of two to four hours, in other words, the amount of time it takes to reduce the amount of the medication in your blood by 50%. You may feel the effects of morphine for up to six hours for the standard formula or longer for extended release. Most medications take four to five half-lives to diminish to undetectable amounts in the blood. This is where the calculation of 15 hours comes from.
Main detection time frame
Different companies and care providers may use different opioid screening panels and testing methods. The detection window for morphine and the sensitivity of the test will depend on the type of drug test you take. Most opioid panels will be able to detect morphine.
Urine testing is the most common screening method. Blood tests are mostly used in emergency situations. Saliva tests are less common but growing in popularity. Hair follicle testing should only be used to check for long-term abstinence.
The following is a breakdown of the detection windows for different morphine testing methods:
- Urine testing — Two to five days
- Blood testing — Up to 15 hours
- Saliva testing — Up to 36 hours
- Hair testing — Up to three months
Factors that affect elimination time
The time it takes your body to eliminate morphine from your system will be different from another person’s experience. Some of your personal factors have to do with your body and your age, and these may be impossible to change. Other factors, like your hydration level and health status, may be improved with lifestyle changes.
Personal factors
Your metabolism and your age are two of the biggest factors that affect the speed of morphine elimination. The liver and kidneys filter the blood, so their health can impact your elimination time. Older people typically clear morphine out of their system at a lower rate than younger people. This means they may notice more effective pain relief.
Genetic variations can impact morphine metabolism, but the effects differ across individuals rather than being reliably linked to ethnicity. People assigned female at birth may be more likely to retain certain drugs in their bodies longer than those assigned male at birth. However, there aren’t conclusive clinical tests that confirm this is true for opioids.
Drinking plenty of water can help support liver and kidney function, boosting your ability to filter out morphine. People who have higher body weight may not eliminate morphine metabolites as quickly as others.
The following personal factors can affect morphine elimination:
- Age and metabolism rate
- Ethnicity
- Body weight and composition
- Liver and kidney function
- Hydration levels
- Overall health
Usage patterns
The amount of morphine you’ve taken and your use of it over time can affect elimination and detection. For instance, if you’ve only taken one or two doses, you may have a negative urine test after about 15 hours. If you’ve been taking it consistently, it may show up on a urine test up to five days after your last dose. Immediate-release morphine is eliminated faster than extended-release formulas.
These usage factors may affect morphine elimination:
- Dosage amount
- Frequency of use
- Duration of use
- Immediate release vs. extended release
False positives
Other medications and foods containing poppy seeds can cause false positives on opioid screens. Quinolone antibiotics and rifampin can both cause false positives. Let the test provider know about all medications you’re taking so they can use the most accurate testing methods.
Employers don’t typically test for MOUD. If you have a valid prescription, you shouldn’t be penalized for taking that medication. Suboxone won’t show up on drug tests that don’t specifically screen for it. Unless a drug test’s panel includes Suboxone’s active ingredient of buprenorphine, the prescription medication won’t be picked up.
Important considerations for recovery
Knowing how long morphine stays in the body is important for recovery because once you know what to expect, you’re relieved of uncertainty so that you can prepare for potential withdrawal side effects.
Eliminating morphine from the body or transitioning to a medication for opioid use disorder (MOUD) is often a critical step in early recovery. Detoxification used to be the first-line treatment. However, without any medication, people are more likely to use again. Some studies report up to 90% of people using again after detox without other forms of treatment.
MOUD such as Suboxone are used to reduce withdrawal symptoms and cravings in recovery from opioid use disorder (OUD). To transition to MOUD, you only need to stop taking opioids long enough to experience moderate withdrawal symptoms. This doesn’t mean you need to totally get the morphine out of your system. The clinical opiate withdrawal scale (COWS) is used to measure withdrawal symptoms during this process. You should always work with a provider who’s qualified to prescribe MOUD.
Opioid testing is a standard part of treatment for OUD. At Groups, we ask that our members take a weekly urine screen. Our providers use these tests to better understand where you are in your treatment process. We don’t shame people or kick them out for a positive test. In fact, we expect positive tests and using again as part of the treatment process. We’ve seen the proof that taking a compassionate approach allows for better conversations and better recovery outcomes.
Keeping morphine out of your system may be important for life goals such as finding a job and maintaining steady employment. Certain positions and industries require drug testing more than others. MOUD typically doesn’t show up on standard opioid panels.
Groups offers compassionate support for ending morphine use
The time it takes to get one dose of morphine out of your system will depend on your metabolism, your age, and your physical health. For most people, it clears from the urine in less than four days. However, it stays detectable in your hair follicles for much longer — around 90 days. If you’ve been taking it consistently, it may take longer to get a negative urine test.
The best way to safely stop using it will also be unique to your goals, your health, and your life situation. For one dose, you may not need to make a specific plan. If you’ve become dependent on morphine, you’ll likely need support. It may involve tapering down your dose, creating a detox plan, or taking MOUD. If you have a prescription for morphine, talk with your provider first. If your morphine use has gotten in the way of your life activities, you may benefit from a comprehensive recovery program.
At Groups, we provide comprehensive care that includes Suboxone and support. You’ll work with a care team, a licensed counselor, and a group of peers who are also in recovery from OUD. We provide both virtual and in-person options.
Are you looking for help stopping morphine use? Give our Recovery Support Specialists a call today.
We provide treatment across the country — and we’re always expanding. See if we offer care in your state, either online or at one of our 130+ local offices. If Groups does not offer treatment in your area, you can locate other treatment options here.
