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Related Experiment Videos

Misleading acute hypercalcemia due to hyperlipidemia: a method-dependent error.

I Sachmechi1, G Shah, L Rezainadimi

  • 1Department of Medicine, Division of Endocrinology, Mount Sinai Services at Queens Hospital Center, Jamaica, New York 11432, USA.

Endocrine Practice : Official Journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists
|July 15, 2004
PubMed
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This case study highlights artifactual hypercalcemia in a patient with severe hyperlipidemia. Prompt dietary changes and medication normalized calcium levels, suggesting spurious measurements in similar cases.

Area of Science:

  • Clinical Medicine
  • Biochemistry

Background:

  • Hypercalcemia can present with diverse symptoms, necessitating thorough differential diagnosis.
  • Severe hyperlipidemia is a rare but significant factor that can interfere with laboratory assays.

Purpose of the Study:

  • To document a case of artifactual hypercalcemia.
  • To underscore the importance of considering spurious laboratory results in clinical practice.

Main Methods:

  • Case report of a 33-year-old female with fatigue, weight loss, rash, diabetes, and hypertension.
  • Laboratory analysis including serum calcium measurement by spectrophotometry, lipid profile, and other biochemical markers.
  • Therapeutic intervention with a low-fat diet and gemfibrozil.

Main Results:

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  • The patient presented with eruptive xanthomas, lipemia retinalis, and laboratory findings of hyperlipidemia, hypercalcemia, anemia, hyperproteinemia, hyperuricemia, and hyperbilirubinemia.
  • Following dietary modification and gemfibrozil, serum triglyceride levels decreased, and serum calcium normalized.
  • Spectrophotometric measurement of serum calcium was implicated in the artifactual elevation.

Conclusions:

  • Artifactual hypercalcemia due to severe hyperlipidemia should be considered in patients with unexplained high calcium levels.
  • Prompt management of hyperlipidemia can resolve spurious hypercalcemia.