Growth Promotion Testing (GPT) is a procedure used to demonstrate the performance of microbiological media by ensuring it can support the growth of specific microorganisms.

It is critical to confirm that your media will provide reliable results during testing, especially when working with low microbial counts. GPT helps ensure your processes are compliant with regulatory standards such as USP <61>, minimizing the risk of compromised test results.

Quantus performs comprehensive GPT on a wide range of solid and liquid media, including Tryptic Soy Agar (TSA), Sabouraud Dextrose Agar (SDA), Tryptic Soy Broth (TSB), and other specialized media.

We challenge each media type with a specified microbial load to confirm its ability to support growth, providing assurance for both routine testing and specialized applications.

Our Growth Promotion Testing services strictly adhere to microbiological guidelines set by USP <61>, <62>, and other key standards. We use rigorous testing protocols, including low-level inoculation (≤100 CFU) of specific microorganisms, to confirm media performance.

Detailed documentation and reporting are provided for each test, ensuring transparency and compliance with industry regulations.

Quantus uses a variety of organisms for GPT, depending on the media type and customer requirements. Common organisms include Staphylococcus aureus, Escherichia coli, Candida albicans, and Pseudomonas aeruginosa.

We can tailor the microbial panel to meet specific customer needs or regulatory requirements, ensuring the test reflects your operational environment.

The timeline for GPT varies depending on the media type and the organisms being tested. Typically, solid media tests take up to 3 days, while some liquid media tests may require up to 5 days for completion.

Once the testing is finished, we provide comprehensive reports documenting the media’s performance, including growth recovery rates and compliance data.