Bowie-Dick Test

What is a Bowie-Dick Test?

The Bowie-Dick Test is a diagnostic test used in hospitals to verify the effectiveness of pre-vacuum steam sterilizers. It evaluates whether the sterilizer can effectively remove air and allow steam to penetrate a porous test pack—an essential condition for achieving proper sterilization.

This test is typically performed daily, before the first cycle of the day, and is required by sterilization standards (such as AAMI ST79). It is particularly important for facilities using pre-vacuum steam sterilizers to process surgical instruments, towels, and other porous items.

Why is the Bowie-Dick Test Important?

Air removal failures or vacuum leaks in a steam sterilizer can prevent proper sterilization, even if the cycle completes. The test ensures that:

• Steam is uniformly penetrating the load
• No air is trapped in the sterilizer chamber or load materials
• The sterilizer is functioning correctly before surgical items are processed

By identifying vacuum or air removal issues early, hospitals reduce the risk of using non-sterile instruments during procedures, which could lead to surgical site infections, delays, or compliance failures.

For Sterile Processing Departments (SPD), the Bowie-Dick Test is a cornerstone of daily quality assurance, helping facilities maintain patient safety, regulatory compliance, and operational reliability.

Quick Facts

• Used daily in Sterile Processing Departments to validate pre-vacuum sterilizer function
• Required by regulatory standards (e.g., AAMI ST79, CDC, Joint Commission)
• Detects vacuum leaks and poor air removal
• Test results must be documented and retained for compliance
• Not integrated via API—typically manual or device-based documentation