The use of low molecular weight heparin reduced the fetal fraction and rendered the cell-free DNA testing for trisomy 21 false negative.

MING CHEN2018-09-102018-09-102017-03http://onlinelibrary.wiley.com/doi/10.1002/uog.17473/abstracthttp://scholars.lib.ntu.edu.tw/handle/123456789/402380The use of low molecular weight heparin reduced the fetal fraction and rendered the cell-free DNA testing for trisomy 21 false negative.journal article