Hb was significantly higher in SGA infants than in non-SGA infants with thrombocytopenia (SGA: 19.3 (16.7–20.5)/g/dL, non-SGA: 16.7 (13.9–20.8) g/dL: p < 0.05). This evidence concerns the gene GSTM1 and Thrombocytopenia.