Every purchase should be traceable to a specific manufacturing batch, with HPLC purity data and mass spectrometry confirmation from an independent laboratory not the vendors in-house lab
(4) Luca Antelo-Iglesias, Pilar Picallos-Rabina, Valentn Estvez-Souto, Sabela Da Silva-lvarez, Manuel Collado, The role of cellular senescence in tissue repair and regeneration, Mechanisms of Ageing and Development, Volume 198, 2021
Calculate volume: Target concentration matters, e.g., for a 5 mg vial, 2 mL bacteriostatic water yields 2.5 mg/mL (easy dosing math)
Moreover, response to treatment might be highly heterogeneous
Safety Profile and Potential Side Effects Reported Adverse Effects Animal studies report minimal toxicity even at high doses