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The blood test, conducted by Oxford University Hospitals (OUH) NHS Foundation Trust at its John Radcliffe Hospital, measures the ratio of two placental factors - maternal serum soluble fms-like tyrosine kinase (sFlt-1) and placental growth factor (PlGF) - that are released into the mother’s blood.
The test was developed by Roche Diagnostics, who have funded a trial conducted at the Women’s Centre at the John Radcliffe Hospital.
Find out more (Department of Women's and Reproductive Health website)