| Lvl | Code | Display | Definition |
| 1 | registered | Registered | The existence of the observation is registered, but there is no result yet available. |
| 1 | preliminary | Preliminary | This is an initial or interim observation: data may be incomplete or unverified. |
| 1 | final | Final | The observation is complete and there are no further actions needed. Additional information such "released", "signed", etc would be represented using [Provenance](provenanc e.html) which provides not only the act but also the actors and dates and other related data. These act states would be associated with an observation status of `preliminary` until they are all completed and then a status of `final` would be applied. |
| 1 | amended | Amended | Subsequent to being Final, the observation has been modified subsequent. This includes updates/new information and corrections. |
| 2 | corrected | Corrected | Subsequent to being Final, the observation has been modified to correct an error in the test result. |
| 1 | cancelled | Cancelled | The observation is unavailable because the measurement was not started or not completed (also sometimes called "aborted"). |
| 1 | entered-in-error | Entered in Error | The observation has been withdrawn following previous final release. This electronic record should never have existed, though it is possible that real-world decisions were based on it. (If real-world activity has occurred, the status should be "cancelled" rather than "entered-in-error".). |
| 1 | unknown | Unknown | The authoring/source system does not know which of the status values currently applies for this observation. Note: This concept is not to be used for "other" - one of the listed statuses is presumed to apply, but the authoring/source system does not know which. |
