Yes, false negative readings do happen, either from testing too earlyor from making an error in following the test instructions. They canalso arise from using a diluted urine sample and/or from inaccuraciesin timing of the test.It is to be noted that first morning urine is the ideal specimen forpregnancy testing as it contains the highest concentration of HCG, thelevel of which can differ from one woman to another despite a similargestational stage.So, if you suspect you’re pregnant, go see your doctor for a bloodpregnancy test no matter what result you get from any home pregnancytest kit.