The analysis of umbilical cord tissue and blood for various substances provides a retrospective view of fetal exposure during gestation. This diagnostic tool allows for the detection of drugs, alcohol, environmental toxins, and other biomarkers that can impact neonatal health. These tests offer a valuable complement to maternal self-reporting, which may be incomplete or inaccurate.
The practice of examining the umbilical cord for diagnostic purposes has roots in the late 20th century, with its application expanding as technology advanced. Initial applications focused primarily on detecting genetic abnormalities and blood type incompatibilities. As analytical techniques improved, the scope broadened to include toxicology screenings and the assessment of fetal exposure to harmful substances. The evolution of mass spectrometry played a significant role in enabling the detection of increasingly minute quantities of substances.