The Kit utilizes latex-enhanced immunoturbidimetry to measure the D-Dimer level in human plasma. During the test, D-Dimer in the sample binds with the specific anti-d-dimer antibody that is coated on latex particles to cause agglutination. The turbidity caused by agglutination is detected optically by chemistry analyzer. The change in absorbance is proportional to the level of d-dimer in the sample. The actual concentration is obtained by comparing with a calibration curve with known concentrations.