Our dev team estimates work in hours, but we do not including any testing time in the original estimate. For example if the devs say an item will take 4 hours that will become our estimate for that item, but it might take an additional hour for our QA team to test. Do you add that hour to the original estimate of 4 hours making it 5 hours?

Please include as much detail in your answer instead of just saying yes.

Also, please don't suggest to use story points as this did not work for us.

Thanks!