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Lyophilized Powder

Meaning

Lyophilized powder refers to a substance, often a heat-sensitive biological compound like a peptide hormone, enzyme, or growth factor, that has been preserved through the industrial process of freeze-drying (lyophilization). This technique removes water by sublimation under vacuum, resulting in a stable, porous solid that retains the biochemical integrity and biological activity of the original substance. This preparation method is frequently used in clinical practice for compounding high-purity hormone therapies and preserving diagnostic reagents that require long-term stability.