MONTPELIER, Vt. — Prosecutors say a company that provides drug testing has paid $815,000 to the federal government and Vermont to resolve questionable billing practices.

The U.S. attorney’s office for Vermont said Thursday that the money from Dominion Diagnostics, Inc., of North Kingston, Rhode Island, will be divided between the federal Medicare and Medicaid and Vermont Medicaid programs.

Dominion Diagnostics offers drug monitoring services, such as urine drug testing and clinical blood testing.

The federal and state governments say the company presented claims for payment from Medicare and the Vermont Medicaid program for urine specimens not ordered by doctors.

Dominion Diagnostics said the allegations resulted from an administrative review of paperwork dating back several years and involved “the laboratory processes used to assess the integrity of the urine sample.”