1 If two consecutive transfusions yield increments that do not meet the minimum standard for a successful transfusion (see Refractoriness below), the effectiveness of subsequent platelet transfusions should be evaluated by performing a count 10 to 60 minutes after their completion.
American College of Radiology: Starting at 40, get a mammogram every year. American College of Gynecology and Obstetrics: At 40 to 49, get a mammogram every year or every two years; at 50 and older, a mammogram every year. U.S. Preventive Services Task Force: At 50, get a mammogram every two years, ending at 75.
However many women don't know at what to get a mammogram or how often to get one. According ot the National Cancer Institute, women in their 40s and older should have mammograms every 1 to 2 years. Women with an elevated risk of breast cancer need to talk to thier doctor about how often and when to get a mammogram.