Serum Sph-1-P and DHSph-1-P levels in non-hematological disorder subjects and subjects with hematologic diseases. Serum samples were collected from the patients described in Table 1 and the serum Sph-1-P (A) and DHSph-1-P levels (B) were measured. *P<0.05 vs. the NHD (non-hematological disorder) group and P<0.01 vs. ET (essential thrombocythemia). †P<0.01 vs. AA (aplastic anemia) and NHD and P<0.05 vs. VWD (von Willebrand diseases), ‡P<0.05 vs. NHD and P<0.01 vs. ET, §P<0.01 vs. NHD, AA, and ITP (idiopathic thrombocytopenia purpura) and P<0.05 vs. VWD.