Implementing California Senate Bill 493 in an Outpatient Pharmacy Within an Integrated Health System: Evaluation of the Operational and Clinical Effect of Pharmacist-Ordered Laboratory Tests.

Abstract

Under California Senate Bill 493, pharmacists can order patient laboratory tests (labs). Currently, it is unknown if this service affects patient outcomes or pharmacy operations. Does lab ordering by pharmacists improve access to care, improve quality outcomes, and/or affect pharmacy operational functions? A 13-month pilot study was conducted at 2 Kaiser Permanente (KP) outpatient pharmacies where pharmacists provided extended adherence consultations and ordered hemoglobin A1c (HbA1c) labs for patients nonadherent to their oral diabetic medications with an HbA1c ≥ 8% or missing annual labs. Clinical outcomes of the pilot study were compared with a similar patient population at KP who concurrently received lab orders from their primary providers, defined here as the "usual care model." Of the 793 HbA1c lab orders, 87 (11.0%) were generated by a pharmacist, and 706 (89.0%) were generated by the usual care group. Forty-three (49.4%) patients in the pharmacist group completed their labs compared with 279 (39.5%) patients in the usual care group (P = 0.10). A significantly greater proportion of patients in the pharmacist group achieved an HbA1c < 8% within the follow-up period of 30-180 days (34.9%), compared with the usual care group (12.2%, P < 0.01). Of the patients who completed labs during the evaluation period, 38 (43.7%) patients in the pharmacist group and 111 (15.7%) patients in the usual care group had prelaboratory values ≥ 8% within the previous 12 months. The average pre-HbA1c value was 9.47% in the pharmacist group, and the average post-HbA1c value was 8.68% (P < 0.01). For the usual care group, the average pre-HbA1c value was 9.70%, and the average post-HbA1c value was 9.43% (P = 0.06). When comparing the difference in HbA1c reduction between the 2 groups, there was a larger decrease in HbA1c in the pharmacist group, but this difference was not significantly different (P = 0.06). The pilot study added an average of 5 minutes per patient encounter to the pharmacy workflow but did not affect overall patient wait times for receiving outpatient prescriptions. Laboratory ordering by pharmacists in the outpatient setting improved access to care, improved quality outcomes, and did not adversely affect pharmacy operations. No outside funding supported this project. The authors have nothing to disclose.