Test b opiates 300 ngml cutoff urine sample that contains oxycodone at 500 ngml will test negative. Another important aspect of creatinine interpretation is its use to monitor abstinence from marijuana. Urine drug testing udt encompasses a variety of tests that can be very useful in patient care. Interpretation of drug testing results in medication.
Urine drug screening urine drug screens uds are a valuable tool in our management of patients on chronic opioid therapy, however, the results can be misleading and clinical judgment is needed in. The length of time a drug can be detected in the urine varies due to several factors, including hydration, dosing, metabolism, body mass, urine ph, duration of use, and a drug s particular pharmacokinetics. Think of urine drug screen results as a test on the providers treatment quality do you need to change care. Discuss unexpected results with the local laboratory or toxicologist if assistance is needed with interpretation. Interpretation of drug testing results in medicationassisted treatment ncdc, april 2018. Urine samples can be adulterated with other substances to mask positive results on urine drug testing. Specimen validity testing is an important part of every urine drug test. The ethyl glucuronide etg test is widely used to detect the presence in the urine of ethyl glucuronide, a breakdown product of ethanol, the intoxicating agent in alcohol.
Despite the widespread use of urine drug tests udts, there is little published information on how to correctly interpret the results of these tests. Understand the role of urine drug screens in the monitoring of patients on opioids understand the role of urine drug screens for patient on opioid agonist treatment correctly interpret a variety of urine drug screen results. Urine test results give no information about impairment. This makes for easy and quick interpretation of the urinalysis results by placing the strip next to the. Pdf with sound analytical methodology, good laboratory practice, and intact specimen chainofcustody, test result interpretation is the final. Urine test results give no information about how much what dose of a substance the donor took. Always wear gloves whilst messing about with another persons pee. Interpreting urinalysis and urine culture results philip sloane, md, mph professor of family medicine and geriatrics. For the testing, the doctor can use either a visual exam, dipstick test or microscopic exam when conducting the urine test. Family physicians must be familiar with these substances, the methods to detect them, and their effects on urine drug testing. Cloudy or odorous urine is typically a sign of dehydration.
Urine drug monitoring udm is an important tool to screen adherence and. Inappropriate interpretation of the results and failure to order definitive testing when. Interpretation of opiate urine drug screens summary urine drug testing is highly reliable, but false positives can rarely occur for some drugs. The aim of this article was to discuss the interpretation of urine drug tests and their application to pain physician practices. In such cases, consent for the drug screen is inferred, and its results may be used. Prior studies indicate that family physicians sometimes misinterpret urine drug test results, and interpretation may be more complex when results include prescription medications. Pdf drugtesting methods and clinical interpretations of test results. Urine test results give only limited information about when a donor might have taken the substance for which she is positive. In order to determine if a urine specimen is negative or positive. Anticipating the increase in use of these tests, our institution.
When considering a cliawaiver, providers should keep in mind that some states have regulations that differ from. Urine drug testing is an essential component of monitoring patients who are receiving longterm opioid therapy, and it has been suggested for patients receiving longterm benzodiazepine or stimulant therapy. Interpretation of opiate urine drug screens healthpartners. It analyzes your urine for the presence of certain illegal drugs and prescription medications. Appropriate use of urine drug testing udt to improve patient care available tests and con. Drug testing is the evaluation of urine, blood or another type of biological sample to determine if the subject has been using the drug or drugs in question. This means that a result will only be positive if the amount of the drug is above a certain level. Important considerations in the interpretation of forensic urine drug. Think of urine drug screens as akin to hba1c results. The urinalysis is a simple and noninvasive test that. Taking these limitations into consideration when interpreting test results will optimize the clinical utility of urine drug testing and will assist clinicians in their clinical decisionmaking in. The concentration of the thc metabolite, carboxythc, can fluctuate from daytoday. The following is an explanation of redwood toxicology.
Urine drug concentrations national drug court institute. Correct evaluation of urine drug tests udts is essential for appropriate chronic prescribing of controlled substances. Even the routine urinalysis should be a midstream specimen after cleansing the meatus. A urine drug test, also known as a urine drug screen or a uds, is a painless test. Urine drug testing is highly reliable, but false positives can rarely occur for some drugs. Urine drug testing is an important part of managing longterm opioid therapy. Consult with our expert toxicologists and clinical pharmacists available for realtime discussion, results interpretation, education and training on the radar hotline 866 8660605. Clinical interpretation of urine drug tests mayo clinic proceedings.
Interpretation of urine drug testing in pain patients. Incorrect interpretation of test results falsepositive or falsenegative can have signi. Pdf as interest increases in employmentrelated drug testing, the. Those dipsticks make a pretty good catapult for drops of eyeball. A urinalysis, or urine test, is a common medical test in which the urine is examined to diagnose and monitor various illnesses. Drug testing faqs tests, detection times, and false. Drugs of abuse urine testing rtl processes over 85,000 urine specimens each. With the recent increase in deaths caused by opioid overdoses, several federal and state regulations have been. Interpretation of urinalysis results urinalysis is used as a screening andor diagnostic tool to detect substances or cellular material in the urine associated with metabolic disorders, renal dysfunction or. Accurate interpretation of drug screen results requires knowledge of the urine metabolites.
As always, clinical judgment is necessary when interpreting test results. Urine drug testing clinical practice ui health care. While urine drug testing remains the primary strategy for the abstinence monitoring of drug court participants, interpretation of test results continues to be. Urine culture results philip sloane, md, mph professor of family medicine and geriatrics. Blood and urine are the most commonly used fluids in the analysis. The procedure can be discomforting causing mild pains. A positive result indicates that the specific drug or class of drug is present at or above the designated cutoff level. Consider using the cdc mobile app to practice the types of conversations you may encounter with patients. Interpreting urine drug test results is complicated, and mistakes can have serious consequences for patient care. It provides clinicians with critical information about the accuracy and reliability of drug test results, and that the specimen submitted is. Half life the amount of time it takes for the drug concentration in the urine or blood to decrease by one half 2. Eddp levels, in contrast, are relatively unaffected by the influence of ph and are therefore preferable for assessing compliance with therapy.
Methadone levels in urine are widely variable depending on factors such as dose, timing of collection, metabolism, and urine ph can even be undetectable. How to correctly interpret a urine drug screen result. As a screening test, the initial immunoassay is less sensitive and therefore must be interpreted in the. We utilized a selection of recent articles on urine. Appropriate use of drug testing in clinical addiction medicine asam. As always, clinical judgment is necessary when interpreting. Urine drug testing centers for disease control and. Interpreting urine drug test results nationwide medical. The reference for color changes is posted on the plastic bottle container of the urine test strips. Urine toxicology use and interpretation kara lynch read.
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