The effect of diterpenes on coagulation time analyzed by different methods. For prothrombin time (PT), diterpenes were incubated with plasma for 10 min at 37 °C, and then thromboplastin was added to induce coagulation. For the activated partial thromboplastin time (aPTT), diterpenes were incubated with plasma plus cephalin for 10 min at 37 °C, and then, CaCl2 (8.3 mM) was added to induce coagulation. For fibrinogen coagulation (FC), diterpenes were incubated for 10 min at 37 °C with fibrinogen (2 mg/mL), and then, thrombin (10 nM) was added to induce coagulation. Results are expressed as the means ± SEM of two individual experiments (n = 8). PAC/ISO, pachydictyol A/isopachydictyol A; DIC, dichotomanol. * p < 0.05 when compared with NaCl or DMSO.