Question: how long will a pregnancy test show positive after birth?
Answer: positive pregnancy test - more than 25 U/L. pregnant women, about 4 weeks after the last menstrual period or LMP (average 1 week before first missed period) - 0 to 750 U/L. pregnant women, about 5 weeks after the LMP (week after first missed period) - 200 to 7,000 U/L.