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Compounding pharmacies, regulated by the FDA and state boards, create personalized formulations under stringent quality controls, ensuring purity, accurate dosing, and sterilityreducing risks of contamination or substandard products.[41][42][43] These are tailored for human use under medical supervision, often with third-party testing

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Although there are some secondary biomarkers such as the measurement of certain enzyme activities in the leukocytes or the excretion of 3-hydroxy-3-methylbutyric acid in the urine, these are ambiguous indications and only a few doctors are familiar with the corresponding tests (8, 9)