An international team of researchers has discovered a simple accurate new blood test that can predict the chances of Type 2 diabetes in women with gestational diabetes. Gestational diabetes occurs in three to 13 per cent of all pregnant women and increases a woman's risk of developing Type 2 diabetes by 20 to 50 per cent within five years after pregnancy the study said. Using the novel technique called targeted metabolomics the scientists tested the fasting blood samples of 1035 women diagnosed with gestational diabetes within two months after delivery. Typically diabetes is diagnosed by measuring blood sugar levels in