Private insurance companies will be required to reimburse customers for up to eight at-home Covid-19 tests per month starting Saturday, according to a policy announced Monday, as the Biden Administration grapples with high demand for tests amid a soaring number of coronavirus cases from the omicron variant.

Private insurers can pay for at-home tests upfront at preferred pharmacies and retailers, or reimburse people who buy the test kits elsewhere, the Department of Health and Human Services said in a press release.

Only tests purchased on or after January 15 are required to be reimbursed, though insurance companies can choose to reimburse tests purchased earlier.

Americans on Medicare won’t be eligible for the federal reimbursement plan, though Medicare already covers Covid-19 tests conducted in labs, and Medicaid and Children’s Health Insurance Program plans are already required to fully reimburse the costs of FDA-approved tests.