D-dimer Reagents

Nordic Biomarker has developed three different D-dimer kits for the quantitative determination of the fibrin degradation product D-dimer. All D-dimer kits are Latex Immunoassays (LIA) using immunoturbidimetry as detection principle. 

  • Red D-dimer suitable for instruments with optical channels in the range 650 – 800 nm. That is, most larger coagulation analyzer as well as practical all biochemistry analyzers can run Red D-dimer.
  • Green D-dimer suitable for instruments with optical channels in the range 500 – 650 nm. STA-instruments and several STA-clones operate at these wavelengths.
  • Blue D-dimer suitable for instruments operating at 405 nm, a common wavelength in all coagulation analyzers, and the only choice in many smaller instruments.

The main difference between these three D-dimer reagents is the size of latex particles used to produce them. Of course, all three LIAs appear white, when looking at them in real life. The names Red, Green and Blue is just a mnemonic trick to remember which wavelength they are designed for: red light has long wavelength, blue has short, and green is in the middle! 

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