Be Aware That Biotin May Skew Lab Test Results

February 2018

Patients will ask you whether the B vitamin biotin may interfere with labs...due to a new FDA warning.

Many lab assays use biotin...so it's not a big surprise that high biotin blood levels may skew results.

For example, biotin can cause falsely low TSH or PSA levels...or falsely high free T3 or T4, folate, or testosterone levels.

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