A study do
ne in 2004 evaluated 18 different home pregnancy tests and found that they missed <span style = 'background-color: #dae8f4'>up</span>
to 85% of pregnancies when testing was do
ne on the first day of the missed period. Almost all of them had become positive by
one week after the missed period. So if you
r first test is negative wait a week and test again.
How to improve the accuracy of you
*Use urine collected first thing in the morning--it is more concentrated.