What is the role of lab studies in the diagnosis for vitamin A toxicity?

Updated: Dec 26, 2017
  • Author: Mark Rosenbloom, MD, MBA; Chief Editor: Michael A Miller, MD  more...
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Answer

Laboratory studies in vitamin A toxicity include the following:

  • Serum electrolytes - If vomiting or diarrhea is present

  • Serum calcium - Hypercalcemia may be observed [42]

  • Liver function tests (LFTs)

  • Complete blood count (CBC) - For anemia, leukopenia, or thrombocytopenia

  • Vitamin A assessment by serum retinol concentrations - Vitamin A assessment by serum retinol concentrations may be helpful if the level is markedly high; in mild conditions, however, it may not be sensitive

  • High-performance liquid chromatography (HPLC)


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