The aim of this study is to determine the organic and inorganic components of bile and gallstones in Iraqi patients. Forty seven patients were included in this study with mean age (53+7) years and BMI (30.82+4.18) Kg/m2. Bile was classified according to its corresponding stones into: Bile of Mixed stones and Bile of pigment stones. IR spectra were studied for both types of stones and their bile in addition to biochemical analysis for organic and inorganic components. The organic components include: (cholesterol, bilirubin, bile salts, and phospholipids), while inorganic components include salts of: (calcium, phosphorus, iron, cupper and magnesium). The results reveal to there was significant low levels (p<0.005) of bile salts and phospholipids in bile of patients with mixed stones in comparison to their levels in bile of pigment stones ( p<0.001). There is significant increase in the salts levels of calcium, phosphorus, iron, cupper, magnesium, and bilirubin, in bile of pigment stones as compared to their levels in mixed stones bile. It was concluded that most types of stones that are formed in Iraqi patients are mixed stones when cholesterol is the main component and pigment stones are more less incidence to occur when bilirubin salts form their main component and they are mostly tend to occur in hemolytic diseases such as: sickle cell anemia, thalassaemia and so on .
