Non-invasive prenatal testing (NIPT) of fetal aneuploidy using cell-free fetal 
DNA is becoming part of routine clinical practice. RAPIDR (Reliable Accurate 
Prenatal non-Invasive Diagnosis R package) is an easy-to-use open-source R 
package that implements several published NIPT analysis methods. The input to 
RAPIDR is a set of sequence alignment files in the BAM format, and the outputs 
are calls for aneuploidy, including trisomies 13, 18, 21 and monosomy X as well 
as fetal sex. RAPIDR has been extensively tested with a large sample set as part 
of the RAPID project in the UK. The package contains quality control steps to 
make it robust for use in the clinical setting.
AVAILABILITY AND IMPLEMENTATION: RAPIDR is implemented in R and can be freely 
downloaded via CRAN from here: 
http://cran.r-project.org/web/packages/RAPIDR/index.html.
CONTACT: kitty.lo@ucl.ac.uk
SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics 
online.