United Phlebotomy Lab Services (Blood Collection Services) Provides services in Northern Virginia, Maryland and Washington D.C. to both inpatients and outpatients. We service, Northern Virginia, Maryland and Washington D.C. with 24-hour Phlebotomy Services, provided whenever and wherever you need them in clinical settings or at home. United Phlebotomy Lab Services 24-Hr Service is fully licensed and certified, and United Phlebotomy Lab Services works with almost every hospital laboratory in the Northern Virginia , Maryland and Washington , D.C. area. We make it easy for you. And you'll appreciate our price structure. Services are available at competitive rates, with no extra charge for STAT service or There is no charge for supplies and our partners offer convenient billing methods and insurance invoicing.