Best medical lab in Lawrence, Massachusetts (MA) 2024

Scheduled an appointment well in advanced for today at 8:30 am. 4 people waiting outside the door. Place supposed to open at 8:30 but doors were closed at 8:45 so we started knocking at the front door with no response. Then I happen to check my email to find out that the appointment was just canceled due to maintenance. Really? Could not send the message earlier so I could go to work? Could not post a sign at the door and not waste people's valuable time? Place looks like trash and I do not recommend anybody to go to this dump. ~A