Prescription Opioids. V. Metabolism and Excretion of Oxymorphone in Urine Following Controlled Single Dose Administration.

Oxymorphone (OM), a prescription opioid and metabolite of oxycodone, was included in the recently published proposed revisions to the Mandatory Guidelines for Federal Workplace Drug Testing Programs. To facilitate toxicological interpretation, this study characterized the time course of OM and its metabolite, noroxymorphone (NOM), in hydrolyzed and non-hydrolyzed urine specimens. Twelve healthy subjects were administered a single 10 mg controlled-release OM dose, followed by a periodic collection of pooled urine specimens for 54 h following administration.

Prescription Opioids. VI. Metabolism and Excretion of Hydromorphone in Urine Following Controlled Single-Dose Administration.

Hydromorphone (HM), a prescription opioid and metabolite of morphine and hydrocodone, has been included in proposed revisions to the Mandatory Guidelines for Federal Workplace Drug Testing Programs. This study characterized the time course of HM in hydrolyzed and non-hydrolyzed urine specimens. Twelve healthy subjects were administered a single 8 mg controlled-release HM dose, followed by periodic collection of pooled urine specimens for 54 h following administration.

Prescription Opioids. IV: Disposition of Hydrocodone in Oral Fluid and Blood Following Single-Dose Administration.

The Substance Abuse and Mental Health Services Administration (SAMHSA) is currently evaluating hydrocodone (HC) for inclusion in the Mandatory Guidelines for Federal Workplace Drug Testing Programs. This study evaluated the time course of HC, norhydrocodone (NHC), dihydrocodeine (DHC) and hydromorphone (HM) in paired oral fluid and whole blood specimens by liquid chromatography-tandem mass spectrometry (limit of quantitation = 1 ng/mL of oral fluid, 5 ng/mL of blood) over a 52-h period. A single dose of HC bitartrate, 20 mg, was administered to 12 subjects.

Immunoassay in healthcare testing applications.

Immunoassay is used extensively for drug testing in pain management. Drug testing for the purpose of compliance monitoring is fundamentally different from forensic applications, which may rely on immunoassay screening to rapidly identify "negative" samples. In clinical settings, focus is shifted from identification of select drugs of abuse with low positivity rates to detection of a wide variety of licit and illicit compounds with expected high positivity rates.

Prescription opioids. III. Disposition of oxycodone in oral fluid and blood following controlled single-dose administration.

Oxycodone (OC) is recommended to be included as an analyte tested in the proposed Substance Abuse and Mental Health Services Administration (SAMHSA's) Mandatory Guidelines for Federal Workplace Drug Testing Programs using Oral Fluid (OF) Specimens. This study demonstrates the time course of OC and metabolites, noroxycodone (NOC), oxymorphone (OM) and noroxymorphone (NOM), in near-simultaneous paired OF and whole blood (BL) specimens by liquid chromatography-tandem mass spectrometry (LC-MS-MS) (limit of detection = 1 ng/mL OF, 5 ng/mL BL). A single dose of OC 20 mg controlled-release was administered to 12 healthy subjects followed by specimen collections for 52 h.

Risks and responsibilities in prescribing opioids for chronic noncancer pain, part 2: best practices.

Opioids are increasingly prescribed to provide effective therapy for chronic noncancer pain, but increased use also means an increased risk of abuse. Primary care physicians treating patients with chronic noncancer pain are concerned about adverse events and risk of abuse and dependence associated with opioids, yet many prescribers do not follow established guidelines for the use of these agents, either through unawareness or in the mistaken belief that urine toxicology testing is all that is needed to monitor compliance and thwart abuse. Although there is no foolproof way to identify an abuser and prevent abuse, the best way to minimize the risk of abuse is to follow established guidelines for the use of opioids.

Prescribing opioids for chronic noncancer pain in primary care: risk assessment.

The use of opioids for patients with chronic noncancer pain has increased dramatically, and with increasing use there is increasing concern about the potential for abuse and addiction during long-term treatment. Clinicians should avoid viewing formal or subjective risk assessment as a means of classifying patients into 2 distinct categories: compliant patients and substance abusers. The provider who perceives a patient as compliant may have a complacent attitude toward aberrant drug-related behavior, presuming that these signs reflect inadequately controlled pain, to be addressed by dose escalation.

Determining zolpidem compliance: urinary metabolite detection and prevalence in chronic pain patients.

Zolpidem (Ambien(®)) is the most prescribed insomnia treatment in the USA; however, little is known about zolpidem metabolite excretion in chronic pain patients. As zolpidem is extensively metabolized in vivo to zolpidem 4-phenyl carboxylic acid (ZCA), metabolite detection may provide improved accuracy for compliance determinations, thereby improving clinical decisions. Zolpidem and ZCA were extracted from 1 mL human urine by mixed-mode solid-phase extraction.

Oxycodone/Naloxone: role in chronic pain management, opioid-induced constipation, and abuse deterrence.

The use of opioids in the treatment of chronic pain is widespread; the prevalence of specific opioids varies from country to country and depends on product availability, national formulary systems, and provider preferences. Patients often receive opioids for legitimate treatment of pain conditions, but on the opposite side of the spectrum, nonmedical use of opioids is a significant public health concern. Opioids are associated with several side effects, and constipation is the most commonly reported and persistent symptom.

Prevalence of heroin markers in urine for pain management patients.

Surveys of current trends indicate heroin abuse is associated with nonmedical use of pain relievers. Consequently, there is an interest in evaluating the presence of heroin-specific markers in chronic pain patients who are prescribed controlled substances. A total of 926,084 urine specimens from chronic pain patients were tested for heroin/diacetylmorphine (DAM), 6-acetylmorphine (6AM), 6-acetylcodeine (6AC), codeine (COD), and morphine (MOR).

Urine drug testing of chronic pain patients. V. Prevalence of propoxyphene following its withdrawal from the United States market.

Propoxyphene is an opioid analgesic that was surrounded by controversy concerning its safety and efficacy during its lifespan in the US market. Propoxyphene was withdrawn in November of 2010 from the US market and is still being detected one year post-withdrawal in urine specimens from the pain management population. In this study, the prevalence of propoxyphene was determined in a total of 417,914 urine specimens collected from 630 clinics involved in pain management located in 24 states during the period of January 1, 2010, through December 31, 2011.

Prevalence of synthetic cannabinoids in U.S. athletes: initial findings.

A number of synthetic cannabinoids such as JWH-018 and JWH-073 have been incorporated into "spice" products. Despite having labels warning against human consumption, the products are smoked for their cannabinoid-like effects and the extent of their use by athletes has not been adequately described. Urine samples collected from 5,956 athletes were analyzed by high-performance liquid chromatography-tandem mass spectrometry for the presence of JWH-018, JWH-073, and their metabolites.

Oral fluid drug testing of chronic pain patients. II. Comparison of paired oral fluid and urine specimens.

A clinical study was conducted to compare the use of oral fluid to urine for compliance monitoring of pain patients. Patients (n = 133) undergoing treatment for chronic pain at four clinics participated in the study and provided paired oral fluid and urine specimens. Oral fluid specimens were collected with Quantisal(TM) saliva collection devices immediately following urine collection.

Oral fluid drug testing of chronic pain patients. I. Positive prevalence rates of licit and illicit drugs.

Oral fluid compliance monitoring of chronic pain patients is an analytical challenge because of the limited specimen volume and the number of drugs that require detection. This study evaluated oral fluid for monitoring pain patients and compared results to urine studies of similar populations. Oral fluid specimens were analyzed from 6441 pain patients from 231 pain clinics in 20 states.

Urine drug testing of chronic pain patients. IV. prevalence of gabapentin and pregabalin.

Gabapentin and pregabalin are well established for the treatment of seizures and neuropathic pain. Both drugs are eliminated primarily unchanged by renal excretion. As part of an ongoing research program to improve and expand drug testing methods for compliance monitoring of pain patients, the prevalence and concentrations of gabapentin and pregabalin in urine specimens from chronic pain patients were determined by a validated liquid chromatography-tandem mass spectrometry assay.

Urine drug testing of chronic pain patients. III. Normetabolites as biomarkers of synthetic opioid use.

Opioids are important therapeutic agents available to patients with moderate to severe pain. The synthetic opioids, buprenorphine, fentanyl, meperidine, methadone, and propoxyphene have been utilized for decades as analgesics. One of the major biotransformation pathways of these drugs occurs through N-demethylation leading to the formation and excretion of normetabolites.