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Related Experiment Videos

Spurious stones.

M H Gault1, N R Campbell, A E Aksu

  • 1Department of Laboratory Medicine, General Hospital, St. John's, Nfld., Canada.

Nephron
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

A significant portion of urinary stone submissions are artifacts, not true calculi. These spurious stones, often mineral in origin, can complicate clinical diagnosis and laboratory analysis.

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Area of Science:

  • Urology
  • Nephrology
  • Materials Science

Background:

  • Urinary stone analysis is crucial for diagnosis and treatment.
  • Accurate identification of urinary calculi is essential for patient management.

Observation:

  • 3.5% of 3,300 submitted specimens were artifacts, not urinary stones.
  • Artifacts included organic materials and mineral substances like quartz and feldspar.
  • Some patients repeatedly submitted non-calculus materials.

Findings:

  • Laboratory methods like infrared analysis, wet chemistry, and X-ray diffraction were used.
  • 28 artifacts were organic, 88 were mineral.
  • A majority of mineral artifacts may be submitted for non-medical reasons.

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Implications:

  • Spurious urinary stones can lead to diagnostic challenges and unnecessary investigations.
  • Understanding the origin of artifacts is important for effective laboratory and clinical practice.
  • Further investigation into patient motivations for submitting artifacts may be warranted.