An algorithm to screen for preeclampsia using a smart phone

Preeclampsia is one of the leading causes of maternal death in developing and underdeveloped countries. A simple urine test, called the Congo Red Dot Test (CRD Test), was recently proposed to screen for preeclampsia. This paper reports an algorithm for automatically quantifying and interpreting the CRD Test. The algorithm can be easily programmed as an app on a smart phone. When evaluated on a pilot data set, the screening accuracy of the algorithm is high. The CRD Test and the algorithm can be easily deployed in resource-limited countries.