No she did not use the 1st void of the day. She does know that when she does take the lab test not to use the 1st void or the beginning or the end of the stream. I did buy a bottle of Ready Clean just in case, however I dont know if a lab test picks up any of the ingredients of it. She should be ok though? Even though it was not her 1st void of the day? Thank you very much for your help.