Article · 4 min read
Foamy Urine: Is It a Kidney Problem?
What foamy urine means and when it signals protein in the urine.
Last updated: 24/9/2026
Occasional foam is harmless, but urine that stays foamy — like beaten egg white — can mean protein is leaking from the kidneys.
Why protein makes foam
Protein changes urine's surface tension, creating lasting foam. A quick urine test confirms proteinuria.
What to do
If foamy urine persists, ask for a urine albumin test — it catches kidney damage early.
Frequently Asked Questions
Does foamy urine always mean kidney disease?
No. Concentrated urine or forceful urination can cause foam, but persistent foam should be checked.
Sources
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This page is for general education only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified doctor about your specific condition.