Fifteen primary care clinics will be randomly assigned to: (1) usual care (UC) (2) electronic message reminder (EMR) (3) automated voice message (AVM) (4) pharmacy outreach team (Pharmacy). The reminders will notify of the patient's need for guideline-specified laboratory testing due to medication use. Using electronic data, patients with PCPs assigned to intervention clinics who are on study-specified medications will be identified and screened for exclusions, to yield 600 patients (200 per intervention group). Patients will be assigned to the treatment groups on the basis of the condition assigned to their usual clinic. After the intervention and observation periods, and using the same time frame and inclusion and exclusion criteria used to identify the patients in the intervention arms, we will retrospectively identify a comparison 200-patient cohort in the usual care clinics. Thus, approximately 800 patients will be included in the study. Baseline, follow-up, and outcome data will be obtained from electronic records.