What is the toxic level of vitamin A?

Updated: Jun 01, 2020
  • Author: Mark Rosenbloom, MD, MBA; Chief Editor: Michael A Miller, MD  more...
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The reference range for vitamin A is 20-60 mcg/dL, and a toxic level is higher than 60-100 mcg/dL. Obtain a complete blood count (CBC) to rule out leukopenia. Also perform calcium, glucose, and liver function tests (LFTs). levels are affected by liver stores and dietary intake of vitamin A.

For serum carotene, the normal range is 50-300 mcg/dL. Carotene levels reflects dietary intake of vitamin A.

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