Hi Mick. . .I wouldn't even bother with a urine challenge test with either DMSA or DMPS. These tests don't show the true picture of heavy metal posioning in the body. Do you know about the Cutler Protocol?. I would imagine your probably aware of it. Can you get DMSA or DMPS in Eygpt?. It sounds to me that Eygpt isn't the place to get those two chelator's either. What's your symptoms been like with the metal cleanse your currently doing. Are you seeing any slight improvements with this cleanse. Can you get DMSA from living networks based in South Africa?. What about just using ALA via Cutler. DMSA can be pretty harsh on folks like us with candida probs. Don't attempt any IV's though.