State officials say they’ll open a fifth COVID-19 saliva testing station Friday in Mankato at the former Gander Mountain location. Tests are free to any Minnesotan who believes they need to be tested — even if they’re asymptomatic. Appointments are required and participants will be asked for health insurance information so the state can bill their insurance company. If insurance doesn’t cover all the cost or a person is uninsured, the state will cover the difference. COVID saliva testing sites are already open in Duluth, Winona, Moorhead and Brooklyn Park — and officials say they’ll open as many as five more locations across Minnesota in coming weeks.