I would like to know what it means when your test results reveal that you have high potassium levels in your blood?

High K+. Sometimes high potassium can be simply a lab error or when the red blood cell hemolyzed after the blood sample is not processed fast enough by the laboratory , but a truly elevated potassium level can be from kidney failure, ingestion of too much potassium , may need to repeat the blood test to verify elevated k+ level.