Isolated marijuana use is frequently used as an indication for urine drug screening in labor and delivery units. We aimed to identify the results of urine drug screening in a labor and delivery unit for isolated marijuana use. This retrospective cohort study reviewed data from patients admitted for delivery at an urban academic center from January 1, 2020, to December 31, 2020. Patients undergoing urine drug screening for isolated marijuana use were more likely to be younger (median age 25 vs 29 years, P<.001), more often Black (adjusted odds ratio [aOR] 2.58, 95% CI 1.94–3.41), and more likely to have public insurance (aOR 1.54, 95% CI 1.21–1.95). A few (5/338, 1.5%) urine drug screening tests performed for isolated marijuana use were positive for substances besides marijuana. Most patients (177/197, 89.8%) with a urine drug screening test result that was positive for marijuana were reported to the state child abuse hotline. The utility of isolated marijuana use as a criterion for urine drug screening thus appears limited in benefit but rife with inequitable potential to harm.

单独使用大麻经常被用作分娩和分娩单位尿液药物筛查的指征。我们的目的是确定分娩和分娩单位的尿液药物筛查结果，以隔离使用大麻。这项回顾性队列研究回顾了 2020 年 1 月 1 日至 2020 年 12 月 31 日在城市学术中心分娩的患者的数据。接受尿液药物筛查以单独使用大麻的患者更有可能更年轻（中位年龄 25 岁 vs 29 岁） ,磷<.001），更常见的是黑人（调整后的比值比 [aOR] 2.58，95% CI 1.94–3.41），更有可能拥有公共保险（aOR 1.54，95% CI 1.21–1.95）。少数 (5/338, 1.5%) 对单独使用大麻进行的尿液药物筛查试验对大麻以外的物质呈阳性反应。大多数患者 (177/197, 89.8%) 的尿液药物筛查检测结果为大麻阳性，并向州虐待儿童热线报告。因此，使用分离的大麻作为尿液药物筛查标准的效用似乎益处有限，但充满了不公平的潜在危害。