The purpose of this present study was to assess the correlation between SUVmax and the expression of selected markers associated with tumor metabolism, namely, glucose transporter 1(GLUT1), hexokinase 2 (HK2), pyruvate kinase M2 (PKM2), lactate dehydrogenase A (LDHA), protein kinase B (AKT) and TIGAR. In addition, the relationship between the TIGAR expression and prognosis in non-small cell lung carcinoma (NSCLC) was investigated. The gene discussed is HK2; the disease is non-small cell lung carcinoma.