Blood Draw Lab 2 at Mass General Brigham Healthcare Center (22 Patriot Place, Foxborough) is open to patients with an open laboratory order from their provider. At the blood lab at Patriot Place, no appointment is necessary, walk-in appointments are available. Walk-in appointments are welcome Monday through Friday from 7:30 am to 5:00 pm and Saturday from 8:00 am - 12:00 pm.