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the claim

Urine in the bladder of a healthy person is sterile and contains no bacteria.

the verdict
REFUTED
the evidence says no
Recorded sources
1 source for · 6 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that urine in the bladder of a healthy person is sterile and contains no bacteria?

No. Multiple peer-reviewed sources and a clinical reference state that the bladder of a healthy person is not sterile and contains bacteria, directly contradicting the claim; one nursing textbook still asserts the older sterile-urine teaching.

Verdict: REFUTED · 1 source for, 6 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 1
Medical-Surgical Nursing - E-Book
2015
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Ignatavicius, D. D. & Workman, M. L. (2015). Medical-Surgical Nursing - E-Book. books.google.com. http://books.google.com/books?id=zdx2BgAAQBAJ&dq=Urine+in+the+bladder+of+a+healthy+person+is+sterile+and+contains+no+bacteria.&hl=&as_pt=BOOKS&source=gbs_api

Evidence against · 6
“Sterile Urine” and the Presence of Bacteria -
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“Sterile Urine” and the Presence of Bacteria - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1016/j.eururo.2015.02.041

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More against · 5
Is Urine Sterile? The Truth Behind the Myth
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Is Urine Sterile? The Truth Behind the Myth. (n.d.). health.clevelandclinic.org. https://health.clevelandclinic.org/is-urine-sterile

Current understanding of the urinary tract microbiome in children
2025
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Current understanding of the urinary tract microbiome in children. (2025). doi.org. https://doi.org/10.18565/urology.2025.1.141-147

Age, menopausal status and the bladder microbiome.
2018
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Curtiss, N., Balachandran, A., Krska, L., Peppiatt-Wildman, C., Wildman, S., & Duckett, J. (2018). Age, menopausal status and the bladder microbiome.. doi.org. https://doi.org/10.1016/j.ejogrb.2018.06.011

The urine microbiome: what's normal and what's pathological? Microbiome-based treatment and prevention of urinary tract infections: A review
2025
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The urine microbiome: what's normal and what's pathological? Microbiome-based treatment and prevention of urinary tract infections: A review. (2025). doi.org. https://doi.org/10.26442/26586630.2025.4.203547

Dataset related to article "The Microbiome of Catheter Collected Urine in Males with Bladder Cancer According to Disease Stage"
2022
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Oresta, B., Braga, D., & Lazzeri, M. (2022). Dataset related to article "The Microbiome of Catheter Collected Urine in Males with Bladder Cancer According to Disease Stage". zenodo.org. https://doi.org/10.5281/zenodo.5947497

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