Frisbie Memorial Hospital Laboratory Signal Street, Rochester, NH 03867 (603) 994-0007 Monday - Tuesday: 6:00 am - 5:00 pm Wednesday - Friday: 6:00 am - 3:00 pm Closed Saturday and Sunday. LabCorp 40 Winter St., Ste. 200, Rochester, NH 03867 (603) 332-6181 Hours: Monday - Friday: 7:00 am - 3:00 pm Saturday: 7:00 am - 11:00 am ....