Question: how many weeks pregnant do you have to be before it shows on a test?
Answer: So sensitive you can test up to 5 days before your missed period2. Within 3 minutes your 'Pregnant' or 'Not Pregnant' result in words will appear on the screen. If the result is 'Pregnant' the test will also indicate time since conception occurred ( 1-2, 2-3 or 3+ weeks).