Can o2 stats be normal with copd?

Yes: It is only in advanced cases of COPD that one sees low oxygen saturation.

Yes, but depends: Definitely, it depends on the severity of copd, which can be assessed on a pulmonary function test (pft).

Yes and yes: With an o2 level of 60, the saturation's about 90 and goes up in slow increments thereafter. The meter has a error of 4% so it can read higher. The actual perfect oxygen level is a little over 100 but saturation could be the same as oxygen of 70.