Please purchase one test per sample you will be submitting. Test will not be marked as fulfilled until you receive a result. You will not be charged if we are not able to get a definitive result from your sample. Please make sure your samples are clearly labeled so results stay accurate. Please place each sample in a separate clear plastic bag to reduce risk of contamination. Blood tests only require a small drop, as seen above. Excess blood can cause spoilage. Please register your sample through our members area before you mail them. This helps us plan and prepare to process your order.