What Is Sterile Compounding?

Why Sterile Compounding Exists

Commercial pharmaceutical manufacturers produce standardized drug products in fixed dosages and formulations. Sterile compounding allows pharmacists to create customized preparations for patients who need specific doses, alternative delivery forms, or combinations of drugs not available commercially. Common applications include: customized hormone replacement therapy preparations, preservative-free eye drops for sensitive patients, customized pain management compounds, and research peptide preparations for clinical research.

USP 797 — The Governing Standard

USP <797> (Pharmaceutical Compounding — Sterile Preparations) is the primary regulatory standard for sterile compounding in the United States. It defines requirements for: personnel training and competency assessment; cleanroom design and environmental monitoring; beyond-use dating; quality control testing; and ingredient sourcing and documentation.

The Role of Bacteriostatic Water in Sterile Compounding

Bacteriostatic water is one of the most commonly used vehicles and diluents in sterile compounding. It serves as the reconstitution solvent for lyophilized injectable compounds, providing antimicrobial protection through its 0.9% benzyl alcohol preservative. For compounding pharmacies, sourcing pharmaceutical-grade bacteriostatic water with documented HPLC and endotoxin testing is a USP <797> compliance requirement.

Ingredient Quality Documentation

USP <797> requires compounding pharmacies to use pharmaceutical-grade ingredients with supporting documentation. For bacteriostatic water, required documentation includes: Certificate of Analysis with lot-specific HPLC assay results, endotoxin testing data, sterility confirmation, pH measurement, and manufacturer information.

Renew Lab Group provides all required documentation with every order and offers bulk/wholesale pricing for compounding pharmacies. See: Bulk BAC Water | COA Documentation | Contact for Pharmacy Accounts