First, I think it's great that there is this stool test method for self-test and can recommend this also. The handling is easy and within minutes is the result before. The instructions should be described at 2 points so that no irritations arise, then I could give it 5 stars. 1. states that the extracted stool sample 3-4 days can be held in the tube. What shoud that? There must be an evaluation of the stool sample but immediately. And it shall be as removed and tested even the stool sample of 1 day. Man might mistakenly think that - 3 x chair on 3 different days can also be taken in this self-test - as the doctor handed the sample. 2. The description of the test procedure under flow-item 3 additional notice would be important that the trial should be shaken well (which is mentioned elsewhere in the text, however, is something unfortunately not placed the correct course accordingly).