Mr. John Gleeson:

All of the laboratories we have ever engaged have positive predictive values. If a test states the person has high grade abnormal cells and she then goes on to colposcopy and a biopsy, which is a diagnostic test, a disease that is pre-cancer or cancer is confirmed in the range of 70% to 90% of the time, which is the international rate if we look at screening programmes in England, Scotland, Wales and Ireland. We monitor this, and it is true for all programme laboratories that have worked with us or are working with us.