Homocysteine analysis using Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) is an advanced procedure used to determine homocysteine levels in biological samples, such as blood or plasma. This test relies on the use of stable isotopes to improve measurement accuracy and reduce interference. Homocysteine levels are an important indicator of overall health, as elevated levels are linked to an increased risk of cardiovascular diseases, brain disorders, and other health conditions. This analysis provides valuable information for doctors to assess individual health risks and guide appropriate treatment. Due to its high accuracy, it is used both in medical research and clinical testing.