Serotonin levels can be measured in children with autism. Measuring serotonin levels from blood is healthier. So, if serotonin levels are determined to be high, can they be brought down to normal levels? Yes, this is possible. However, the high serotonin value must be carefully evaluated first. For this purpose, some medical examinations and interventions can be applied. The main ones include:

1. Serotonin antagonists.
2. Serotonin agonists.
3. Controlling serotonin synthesis and degradation pathways.
4. Monitoring the levels and functions of enzymes responsible for serotonin synthesis and degradation.
5. Genetic and epigenetic studies on genes coding for enzymes responsible for serotonin synthesis and degradation.