2. Composition

Bile is a highly complex and variable secretion that consists of many organic and inorganic solutes. At formation, water makes up around 94 to 97 percent of bile. Around one percent of the remaining products are bile salts, and around 0.5 percent are fats such as cholesterol, lecithin, and fatty acids. The remainder is mostly the waste compound bilirubin and inorganic salts. At various moments, bile may also contain hepatocyte proteins, peptides, amino acids, vitamins, heavy metals, and electrolytes.

composition of bile Portra / Getty Images
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