GPT and Hyponatremia: Clinico-laboratory characters which showed significant association with prolonged hospitalization included hyponatremia, hyperkalemia, hyperuricemia, AKI (using AKIN system), elevated liver enzymes (ALT or AST), jaundice, hypoalbuminemia, rhabdomyolysis, leukocytosis, thrombocytopenia, low RBCs or hemoglobin, and prolonged PT (Table 3).