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.
DNA tests can also be helpful in proving if you and someone else have the same paternal or maternal line. 1  They can prove if two people with the same surname have an identical ancestor on the male line.  They can also prove if two people have the same maternal line.