What should I know about Indigo carmine?

Indigo carmine is also known as indigotindisulfonate sodium. Its blue color marks the structures in the kidneys or urinary tract to visualize them during diagnostic tests. It also helps doctors to locate abnormal ureteral openings during cystoscopy or ureteral catheterization. Adverse reactions to indigo carmine are rare. It is usually administered through an IV and passes quickly through the body and out through the urine. It should not be diluted before injection. It's not known whether indigo carmine can affect a fetus or nursing infant.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.