Why does urine turn yellow when dehydrated?

Answered by 1 Apollo Doctors

Dr Siri Nallapu

General Practitioner

MBBS
5+ Yrs

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Urochrome determines the colour of your urine. It is produced by your body breaking down hemoglobin, the protein that carries oxygen in your red blood cells. In most situations, the color of your urine will depend on how diluted this pigment is. Having a lot of B-vitamins in your bloodstream can also cause urine to appear neon yellow.

Dr. Siri Suggests...

Take a Beta-2- Glycoprotein -1 IgM Test or Take a Vitamin C Test Test

Book Beta-2- Glycoprotein -1 IgM Test Book Vitamin C Test Test

Answered 24/07/2025

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Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.