This depends on the circumstance. In some cases, a signed death certificate accompanies the body when it is released by the Coroner.
When there is insufficient information available to complete the death certificate, a “pending” death certificate is issued. This death certificate enables the funeral services and burial to take place while the investigation continues, or for additional chemical, microscopic, slide preparation and examination.
At the culmination of these tests and investigation, the ruling is made based on all available information. An amended death certificate is then issued with the final cause of death determination, which supersedes the “pending” death certificate.