BJOG : an international journal of obstetrics and gynaecology
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To evaluate whether in symptomatic women, the combination of quantitative fetal fibronectin (fFN) testing and cervical length (CL) improves the prediction of preterm delivery (PTD) within 7 days compared with qualitative fFN and CL. ⋯ Quantitative fFN testing adds value to qualitative fFN testing with CL measurement in the prediction of PTD.