One more thing as added measure.....make sure you invest in a few strips and test prior to producing your own sample to freeze AS WELL AS the sample you are freezing. The added precaution is worth any doubt you may have later. After you take time to do that get involved in the forum and learn your body and live it. The healthier you are, the easier it will be to get cleaned up if/when you may need to. There is nothing in this forum that is unhealthy.