GPT and lung cancer: In contrast, these patients exhibited elevated concentrations of BUN, potassium, creatinine, total bilirubin, alanine aminotransferase (ALT), alkaline phosphatase (ALP), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), PT, international normalized ratio (INR), WBC, RDW and the anion gap when compared to lung cancer patients who survived.