Growth Promotion Test Quiz

Microbiologics offers four unique QC microorganism products designed specifically for GPT that provide 10-100 CFU per 0.1 ml of hydrated suspension as required by USP guidelines. Learn more.

Visit our website for helpful technical documents and instructional videos including a step-by-step tutorial on how to use EZ-Accu Shot™. For more GPT advice, check out our 8 Best Practices for Growth Promotion Testing9 Tips for Growth Promotion Testing on Selective Media, and Growth Promotion Best Practices Auditors are Looking for in Pharmaceutical Labs.

Read Next – Non-Sterile Pharmaceuticals: Next Steps After Finding an Environmental Isolate


  1. Liz Coffee

    Great quiz for a basic comprehensive knowledge of GPT and a fantastic tool for education and training. Thank you for putting this together!

  2. Candy

    I do not remember what is GPT. Took the test and did ok. Nonetheless, awesome way to engage people who enjoy a challenge and learning! Thanks again.

  3. Airtech Equipment Pte Ltd

    Impressive..!Thanks for the post..

  4. Roselin Susanna Kaushal

    Could you please advice me were to find the reference expected zone size for different antibiotic for the ATCC 11229 E. coli, ATCC 8427 Proteus vulgaris, ATCC 15442 Pseudomonas aeruginosa, ATCC 9144 Staph aureus, ATCC 29212 Enterococcus faecalis,

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