How to Perform the Catalase Test - Staphylococcus vs Streptococcus

[@gigaguy1773]

I had a lab practice exam yesterday and this guide helped me a lot. The lab teacher had taught us to put a drop of water on the slide and then touch it with a loop containing the cell sample in its tip. The results were dubious at first, but then I remembered this method and we managed to get a very clear Catalase + result. Thank you 1 million times. Keep up the good work.

[@HardyDx]

We're so glad our videos helped! One of our goals is to help the next generation of microbiologists, and we're thrilled to have you as a part of that group! 😊

[@mustafakouzrite3442]

Excellent. Please, can you elaborate why the culture has to be 18 to 24 hours old?

[@HardyDx]

Aerobic organisms must be taken from an 18 to 24 hour old culture. Organisms lose their catalase activity with age. For slower growing anaerobic organisms, an older (24-72 hours) culture may be acceptable.

[@victoropoku19]

Great video, Thank You!!

[@HardyDx]

Glad you liked it!

[@andrewinspirational5031]

This is great ✊ it is actually helping me. as a student for Microbiology.

[@Haxx-ue6yq]

شكراً لقد استفدت كثيراً ❤

[@ibra01]

Thank you so much, much love and appreciated to serving scientific medical Laboratory field ❤️❤️👏🏻

[@HardyDx]

You are super welcome IBRA. We enjoy making these laboratory tutorials for the community. Never stop learning.

[@dr.hannibal8338]

Never seen a high-quality video explaining this test as you guys Thank you so much

[@HardyDx]

You are welcome! I am glad it was useful, we do our very best to be thorough.

[@MEDIOnAcademyBD]

❤

[@danmiller2177]

Thanks!!!

[@HardyDx]

You bet!

[@pheebzcj]

Thanks simple and precise

[@HardyDx]

Glad it helped

[@pandesurf]

Thank you 🙏

[@HardyDx]

You’re welcome!

[@abdinajibmohamed8794]

Thank you 😊

[@HardyDx]

You're welcome !