In US and Canada: For Research Use Only. Not for Use in Diagnostic Procedures. In EU: This product is CE Marked. BIOPHEN alpha2-Antiplasmin (LRT) kit is a chromogenic assay for the quantitative determination of alpha2-Antiplasmin (alpha2-AP) activity in human citrated plasma using a manual or automated method. Reagents are in the liquid presentation, ready to use (LRT = Liquid reagent Technology).