A myIgANcenter Subscriber

Bright yellow urine usually isn't a sign of kidney damage - it's most commonly caused by B vitamins (especially B2) in supplements or multivitamins. However, if you're concerned, contact your nephrologist. They can do a simple urine test to check kidney function. Keep in mind that healthy urine can range from pale yellow to deep amber, and staying well-hydrated usually makes it lighter in color.