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Is Indocyanine Green vegan?

Indocyanine Green (ICG) is a synthetic cyanine dye used in medical diagnostics to assess cardiac output, hepatic function, liver and gastric blood flow, and for ophthalmic and cerebral angiography. It has peak spectral absorption at approximately 800 nm, allowing infrared imaging of deeper vascular patterns. ICG binds tightly to plasma proteins, is confined to the vascular system, and is removed exclusively by the liver to bile with a half-life of 150–180 seconds.

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