There isn't any such symbolic quantitative estimation of bile salt in bile sample as it was used to be considered in previous findings of bile pyramids based on proportional ratios determined between; cholesterol : bile salt : Lecithin. Our findings in our research considered "Abiru theory" that; migration complex and motor motility composed of bi-directional flux of bile in cystic duct by alternate filling and emptying of gall-bladder to prevent saturation of bile by inter-digestive state elucidates old theory of bile pyramids by Isakson & Small.
Thank you. There are some papers that they done by using R.HPLC but I haven't found a clear protocol. Do you know of a protocol for quantitative gallstone pigment estimation?