Gestational age-specific reference intervals for routine haemostatic assays during normal pregnancy

► We reported gestational age-specific reference intervals for haemostatic tests. ► We established such reference intervals using nonparametric method. ► Data were obtained from 1130 samples of normal pregnant women. ► 1130 samples were divided into 5 groups according to gestational age. ► Other clinical laboratories use the reference intervals after validation.