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Cordocentesis Vs Amniocentesis

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1. The additional tests that need to be performed are amniocentesis and cordocentesis. Cordocentesis is based on using high-resolution ultrasound with colour Doppler enhancement of blood flow, in which the umbilical vein is seen at the level of the cord insertion into the placenta. A needle is used and injected into the umbilical vein and fetal blood collected. As a result, the blood sample can be tested and the hemoglobin, hematocrit, DAT and blood type determined. Using the amniocentesis procedure, it involves testing the amniotic fluid using a spectrophotometric scan at increasing wavelengths in which optical density is calculated and plotted against a graph. It is essential for this test to be performed because a high or unchanging optical

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