The immune system has lots of opioid receptors on the immune competent cells. We run a frozen 10 ml urine sample to look for peptides. We need to know the patients name, drug intake and the name and address of the physician to whom we can send the results. If packed in one little box of styrofoam inside a bit larger one and sent as express mail in the beginning of the week , that should be ok. 1-2 mg of thymol added to a complete 24 h urine is a reasonable bacteriostatic and prevents autodegradation.
Neuroleptics induce peptidases and diet of course reduces the peptide load.
The child probably has to be on an ordinary diet for 8 weeks before we can run a peptide pattern screening. Short term on and off is quite cruel because of abstinence problems being switched on and off. Going off diet should be carefully planned by small increments to avoid acute problems. Diet is not a miracle but starts a process of steady improvement over time. This is so because man being a learning organism must learn and this is a process that takes time.