5yo child diagnosed with sleep myoclonus, sleep is interrupted, what r essential blood tests required to see wat medical conditions could b causing it?

?????????: Sleep myoclonus is a normal variant seen occasionally. There is no "blood test" to verify or exclude it. The most aggressive investigation that might confirm or exclude it would be a video-EEG with the patients events recorded for clinical review. I would only pursue that if their were concerns for Rholandic epilepsy or similar problem.