Bromsulfthalein (also known as bromsulphthalein, bromosulfophthalein, and BSP) is a

phthalein dye Phthalein dyes are a class of dyes mainly used as pH indicators, due to their ability to change colors depending on pH. They are formed by the reaction of phthalic anhydride with various phenols. They are a subclass of triarylmethane dyes. Common ...

used in

liver The liver is a major Organ (anatomy), organ only found in vertebrates which performs many essential biological functions such as detoxification of the organism, and the Protein biosynthesis, synthesis of proteins and biochemicals necessary for ...

function tests. Determining the rate of removal of the dye from the

blood stream The blood circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the entire body of a human or other vertebrate. It includes the cardiovascular system, or vascular system, tha ...

gives a measure of

liver function Liver function tests (LFTs or LFs), also referred to as a hepatic panel, are groups of blood tests that provide information about the state of a patient's liver. These tests include prothrombin time (PT/INR), activated partial thromboplastin tim ...

References

Triarylmethane dyes Phthalides Bromoarenes Phenols Benzenesulfonates Organic sodium salts {{organic-compound-stub