To their dismay, patients have to pay for the drug tests at their own (or their insurersâ) expense. Carol, a chronic pain patient who had been treated for seven years by the same clinic without any testing, reports that she was billed $325 for a urine screen.
Reviewed by Brunilda Nazario, MD. May 2, 2012 -- Researchers say they've found a way to identify the father of a baby as early as the eighth week of pregnancy. The new method, reported in the New England Journal of Medicine, uses fetal DNA isolated from the mother's blood.
Best Answer: You can't take take a pregnancy test right after you have sex. Pregnancy tests work by detecting the amount of HCG in your urine, a hormone that is secreted during pregnancy. Right after sex, the sperm wouldn't have even reached the egg so you wouldn't even be pregnant yet.Once the egg is fertilized it still takes six days for it to travel to your uterus, and implanet itself.regnancy tests work by detecting the amount of HCG in your urine, a hormone that is secreted during pregnancy. Right after sex, the sperm wouldn't have even reached the egg so you wouldn't even be pregnant yet.