The rate of recorded heart attacks among women in the UK could soon start to fall because a new blood test has been developed which provides a more accurate diagnosis of the incidence of heart attacks in women. Researchers believe that heart attacks in women may previously have been under-diagnosed because the 'old' blood test was not sufficiently sensitive. They believe that possibly twice as many women will be found using the new test to have had heart attacks as were found using the old one. With more accurate diagnosis, women can start treatment to reduce the risk of a further attack.