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 metabolic organ (anatomy), organ exclusively found in vertebrates, which performs many essential biological Function (biology), functions such as detoxification of the organism, and the Protein biosynthesis, synthesis of var ...

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

blood stream In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. It includes the cardiovascular system, or vascular system, that consists of the heart an ...

gives a measure of

liver function Liver function tests (LFTs or LFs), also referred to as a hepatic panel or liver 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 t ...

. The mechanism by which the liver detoxifies BSP is to attach it to glutathione which is the body’s master antioxidant.

References

Triarylmethane dyes Phthalides Bromobenzene derivatives Phenols Benzenesulfonates Organic sodium salts {{Ether-stub