Boston: 0.49% 801 adolescent girls (aged 12-21 years) attending for day surgery in 1994-1996 had routine urine tests for pregnancy, after being asked for date of LMP, whether they were sexually active and whether they might be pregnant. 6 tests were positive, two of which were false positive, associated with ovarian failure and elevated gonadotrophins. Four patients were pregnant. Only two had ...
