Beginning this week, Rite Aid has expanded its COVID-19 testing program to include some Eastern Washington locations.

The added sites, which include Spokane Valley and Division Street stores, offer self-swab nasal tests that will be overseen by Rite Aid pharmacists. The testing is offered at no cost to adults, but they must preregister online at riteaid.com to schedule a drive-thru service time.

Adults can register regardless of whether they are experiencing virus symptoms, the retailer said in a news release. Testing is available Monday through Friday from 10 a.m. to 8 p.m. and on weekends from 10 a.m. to 5 p.m.

At all testing sites, those being tested must show government-issued identification, be at least 18 and preregister. Rite Aid is partnering with Verily and its Baseline COVID-19 Testing Program to provide screening, scheduling and return of results to participants. BioReference Laboratories provides COVID-19 Laboratory testing.

PWNHealth, a national clinician network, is providing clinical oversight for the testing program.

Rite Aid on Thursday opened 161 additional testing locations for a total of 258, expanding into Washington, California and Oregon in partnership with the U.S. Department of Health and Human Services. In Idaho, Boise-area and McCall stores offer the testing program, but none is yet available in North Idaho .

The retailer said it has the capacity to conduct 94,000 tests weekly across all sites. Rite Aid’s Eastern Washington locations with COVID-19 testing include:

• 5840 N. Division St., Spokane;

• 12222 E. Sprague Ave., Spokane Valley;

• 500 S. Pioneer Way, Moses Lake;

• 250 Basin St. SW, Ephrata;

• 215 N. Fourth Ave., Pasco;

• 101 N. Ely St., Kennewick;

• 2028 E. Isaacs Ave., Walla Walla.

A full list of Rite Aid’s testing sites can be found online at riteaid.com/pharmacy/services/covid-19-testing.