... Figure 3. Separation of tritium-labelled LTB4 and 5,12-diHETE by RP-HPLC in an acetonitrile-based solvent system. ... J. Label Compd. ... with LTB4 binding to BLT1.15 Taken together these results demonstrate that the [3H] LTB4 prepared is useful for labelling LTB4 receptors ...