How early can you take a pregnancy kit test for pregnancy?

most of us end up making the mistake of taking the pregnancy test too early. the second time my doctor told me to wait for 10 days before i took the test. for the first 8 to 10 days, your body will not show up the pregnancy positive line as clear as it will show it later. i think once you miss your periods, wait for at least 10 days and then take the test. take a look at the link below http://www.nhs.uk/chq/pages/948.aspx?categoryid=54&subcategoryid=127