Is Bromsulphthalein vegan?

Bromsulphthalein

Vegan

Bromsulphthalein (BSP) is a synthetic phthalein dye used clinically in liver function tests; the rate of its removal from the bloodstream serves as a measure of hepatic function. The liver detoxifies BSP by conjugating it with glutathione.

Also known as BSP, Sulfobromophthalein sodium
CAS number 71-67-0
Last reviewed 3 June 2026

Sources

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