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Foamy Urine and Protein
✓ Fact-checked against sourced references · Editorial standards
Occasional foamy urine is usually harmless, but persistently foamy urine can be a sign of protein leaking into the urine.
What to check
A simple urine test for protein can clarify whether the foam reflects protein in the urine.
Frequently asked questions
Does foamy urine always mean kidney disease?
No — it can be harmless, but persistent foam is worth a urine protein check.
Sources
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Educational only. This guide is general kidney-care information, not individual medical advice.