Random urine drug testing among patients receiving opioid therapy for cancer pain.

BACKGROUND: There is limited information regarding the true frequency of nonmedical opioid use (NMOU) among patients receiving opioid therapy for cancer pain. Data to guide patient selection for urine drug testing (UDT) as well as the timing and frequency of ordering UDT are insufficient. This study examined the frequency of abnormal UDT among patients with cancer who underwent random UDT and their characteristics. METHODS: Demographic and clinical information for patients with cancer who underwent random UDT were retrospectively reviewed and compared with a historical cohort that underwent targeted UDT. Random UDT was ordered regardless of a patient's risk potential for NMOU. Targeted UDT was ordered on the basis of a physician's estimation of a patient's risk for NMOU. RESULTS: In all, 552 of 573 eligible patients (96%) underwent random UDT. Among these patients, 130 (24%) had 1 or more abnormal results; 38 of the 88 patients (43%) who underwent targeted UDT had 1 or more abnormal results. When marijuana was excluded, 15% of the random group and 37% of the targeted group had abnormal UDT findings (P < .001). It took a shorter time from the initial consultation to detect 1 or more abnormalities with the random test than the targeted test (median, 130 vs 274 days; P = .02). Abnormal random UDT was independently associated with younger age (P < .0001), male sex (P = .03), Cut Down, Annoyed, Guilty, and Eye Opener-Adapted to Include Drugs positivity (P = .001), and higher Edmonton Symptom Assessment System anxiety (P = .01). CONCLUSIONS: Approximately 1 in 4 patients receiving opioids for cancer pain at a supportive care clinic who underwent random UDT had 1 or more abnormalities. Random UDT detected abnormalities earlier than the targeted test. These findings suggest that random UDT is justified among patients with cancer pain.

Compliance with Opioid Therapy: Distinguishing Clinical Characteristics and Demographics Among Patients with Cancer Pain.

Background: Because an increase of patients who misuse opioids has been identified in our cancer clinical setting through urine drug testing (UDT) and the Screener and Opioid Assessment for Patient's with Pain-Short Form (SOAPP-SF), we conducted this retrospective cohort study to identify patient characteristics that are associated with UDT that indicates noncompliance. Methods: Over a two-year period, 167 of 8,727 patients (2.4%) seen in the pain clinic and who underwent UDT were evaluated to determine compliance with prescribed opioid regimens. Descriptive clinical and demographic data were collected, and group differences based on compliance with opioid therapy were evaluated. Results: Fifty-eight percent of the patients were noncompliant with their prescribed opioid therapy. Noncompliant patients were younger than compliant patients, with a median age of 46 vs 49 years (P = 0.0408). Noncompliant patients were more likely to have higher morphine equivalent daily doses; however, the difference was not statistically significant. Patients with a history of alcohol (ETOH) (P = 0.0332), illicit drug use (P = 0.1014), and smoking (P = 0.4184) were more likely noncompliant. Univariate regression analysis showed that a history of ETOH use (P = 0.034), a history of anxiety (P = 0.027), younger age (P = 0.07), and a SOAPP-SF score of 4 or higher (P = 0.05) were associated with an abnormal UDT. Conclusions: History of ETOH use, anxiety, high SOAPP-SF score, and younger age were associated with UDT that indicates noncompliance. Given the very small percentage of UDT testing, it is quite likely that a significant number of patients who did not undergo UDT were also nonadherent with treatment recommendations.

Frequency, predictors, and outcomes of urine drug testing among patients with advanced cancer on chronic opioid therapy at an outpatient supportive care clinic.

BACKGROUND: Data are limited on the use and outcomes of urine drug tests (UDTs) among patients with advanced cancer. The main objective of this study was to determine the factors associated with UDT ordering and results in outpatients with advanced cancer. METHODS: A retrospective chart review was conducted of 1058 patients who attended an outpatient supportive care clinic from March 2014 to November 2015. Sixty-one patients who were receiving chronic opioid therapy and underwent UDTs were identified. A control group of 120 patients who did not undergo UDTs was selected for comparison. RESULTS: Sixty-one of 1058 patients (6%) underwent UDTs, and 33 of 61 patients (54%) had abnormal results. Multivariate analysis indicated that the odds ratio for UDT ordering was 3.9 in patients who had positive Cut Down, Annoyed, Guilty, and Eye Opener (CAGE) questionnaire results (P = .002), 4.41 in patients aged < 45 years (P < .001), 5.58 in patients who had moderate-to-severe pain (Edmonton Symptom Assessment Scale pain scores ≥4; P < .001), 0.27 in patients with advanced-stage cancer, (P = .008), and 0.25 in patients who had moderate-to-severe fatigue (P = .001). Among 52 abnormal UDT results in 33 patients, the most common opioid findings were prescribed opioids absent in urine (14 of 52 tests; 27%) and unprescribed opioids in urine (13 of 52 tests; 25%). CONCLUSIONS: UDTs were used infrequently among outpatients with advanced cancer who were receiving chronic opioid therapy. Younger age, positive CAGE questionnaire results, early stage cancer or no evidence of disease status, higher pain intensity, and lower fatigue scores were significant predictors of UDT ordering. More than 50% of UDT results were abnormal. More research is necessary to better characterize aberrant opioid use in patients with advanced cancer. Cancer 2016;122:3732-9. © 2016 American Cancer Society.