Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Seek emergency care for severe, persistent upper abdominal pain, particularly if it spreads to your back or occurs with repeated vomiting, fever, breathing difficulty, faintness or a fast heartbeat.
Seek prompt medical advice if you develop unexplained yellow-red skin bumps, or if a previously high result rises despite treatment.
These are not usually emergencies by themselves, but they may indicate a very high level.
These symptoms may have several causes, including acute pancreatitis, and need urgent assessment.
Arrange a routine appointment if a blood test shows high triglycerides.
Follow-up is especially important if the result is 500 mg/dL, or 5.6 mmol/L, or higher; if you have diabetes; or if close relatives have had very high triglycerides or pancreatitis.
Every sign above is quoted from the sofidex article on High triglycerides. If you are not sure, err upward — it is always reasonable to be checked.