Bromsulfthalein

Chemical structure of Bromsulfthalein

Bromsulfthalein (also known as Bromsulphthalein) is a synthetic organic compound that was historically used in liver function tests. It is a dye that is used to measure the liver's ability to excrete certain substances.

Chemical Properties

Bromsulfthalein is a sulfonphthalein dye, which means it belongs to a class of dyes that are used as pH indicators and in various diagnostic tests. The compound is characterized by its ability to change color depending on the pH of the solution it is in.

Medical Use

Bromsulfthalein was primarily used in the Bromsulfthalein test, a diagnostic test to assess liver function. In this test, a known amount of bromsulfthalein is injected into the bloodstream, and its rate of clearance from the blood is measured. The liver is responsible for removing bromsulfthalein from the blood, so the rate of clearance can indicate how well the liver is functioning.

Mechanism of Action

Once injected, bromsulfthalein binds to plasma proteins and is transported to the liver. The liver cells take up the dye and excrete it into the bile. The efficiency of this process reflects the liver's excretory function. Impaired liver function results in slower clearance of bromsulfthalein from the blood.

Historical Context

The bromsulfthalein test was widely used in the mid-20th century but has largely been replaced by more modern tests that are less invasive and provide more comprehensive information about liver function. Despite this, the bromsulfthalein test was an important step in the development of liver function diagnostics.

Related Pages

• Liver function tests
• Hepatology
• Bilirubin
• Jaundice