Delivery Doctors Explain What Happens When a Baby's Paternity Comes Into Question
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It is an uncomfortable question that, in today's globe, is often asked by expectant mothers who had more than than ane male partner at the fourth dimension they became significant. Who is the begetter?
With more than half of births to women under xxx now out of wedlock, it is a question that may arise more than frequently.
Now blood tests are becoming available that can make up one's mind paternity as early equally the eighth or ninth week of pregnancy, without an invasive procedure that could cause a miscarriage.
Besides relieving anxiety, the test results might allow women to terminate a pregnancy if the preferred man is not the father — or to go on it if he is.
Men who clearly know they are the father might be more willing to back up the woman financially and emotionally during the pregnancy, which some studies suggest might lead to healthier babies.
And if the tests gain legal acceptance, some lawyers say, women and land governments might i 24-hour interval pursue child support payments without having to wait until the birth. Nether electric current law, "until and unless the pregnancy produces a kid, whatsoever costs associated with it are regarded as the woman'south personal trouble," said Shari Motro, a law professor at the University of Richmond.
The testing itself, even so, can be awkward because it requires a claret sample from at least one of the possible fathers.
Courtney Herndon, after breaking up with her boyfriend, had a brief human relationship with a human being she regarded more as a friend. She plant herself pregnant at age 19, without knowing which human was the father.
The friend too wanted to know, so he agreed to the testing. He turned out to be the father, and the 2 agreed on child back up even before the babe was born.
Epitome
"I got the test done and was able to continue with my life," said Ms. Herndon, who lives in Fort Polk, La.
Estimates of the extent of paternal dubiety vary.
Studies accept found a discrepancy rate — when the presumed father is not the biological father — of anywhere from 0.8 percent to 30 percent, with the median being 3.vii percent, according to one review of such studies. Another study constitute that near nine percent of birth certificates in Florida, fifty-fifty excluding births to teenage mothers, did not list the full names of the male parent, though information technology was not clear how much of this was related to incertitude. Babe mortality was higher in those cases than if the father's name was on the birth certificate.
It has already been possible to determine paternity during pregnancy using amniocentesis or chorionic villus sampling, the aforementioned medical procedures used to test a fetus for Down syndrome. But those procedures are invasive and carry a pocket-size gamble of inducing a miscarriage, and so they are rarely used for paternity testing.
By contrast, the new tests require simply blood samples from the pregnant woman and the potential begetter. And doctors more often than not practise not have to be involved.
That could vastly expand testing, said Sara Katsanis of Duke University's Institute for Genome Sciences and Policy. She is planning a study with one of the testing companies to encounter if prenatal paternity testing tin can reduce a pregnant woman's stress.
Some noninvasive paternity tests have been offered over the Internet for almost a decade, and at that place have been various complaints about inaccurate or even fraudulent results.
Simply experts say the technology has avant-garde to the point that such testing can now exist done reliably. A brief paper describing one such examination, developed by a company called Ravgen, was published recently in the prestigious New England Periodical of Medicine.
"I have no doubt that these tests will work clinically," said Dr. Mark I. Evans, a professor at the Mount Sinai School of Medicine and director of Comprehensive Genetics, a medical do in New York that specializes in prenatal testing.
The tests analyze fragments of DNA from the fetus that are present in the mother's blood in tiny amounts. The same approach is at present also being used to noninvasively decide the gender of the fetus or whether it has Down's syndrome. And researchers recently demonstrated that they could even determine a fetus'southward unabridged genome this way.
Ravgen, a small company in Columbia, Md., has been offering its test on a limited footing and charges $950 to $i,650, depending on the circumstances, said Dr. Ravinder Dhallan, the principal executive.
Another test was developed by a company in Silicon Valley chosen Natera, and is marketed by DNA Diagnostics Center, a leading provider of conventional paternity tests. Thousands of the prenatal tests take been ordered since going on sale last August, executives say. The price is $i,775, compared with around $500 for a conventional postbirth paternity test.
Paradigm
Neither test has received a certification for accurateness that is necessary for use in child custody cases, though Natera has applied. The certifying organisation, the AABB, is seriously considering whether it should certify prenatal tests, said Eduardo Nunes, senior director for policy, standards and global evolution at the organisation, formerly known as the American Association of Blood Banks.
Still, some experts urge caution. Natera has not nonetheless published whatsoever data well-nigh its test in peer-reviewed journals. Ravgen's paper in The New England Journal of Medicine discussed just 30 samples. (The test correctly distinguished the male parent from a randomly called man in all 30 cases.)
The tests could generate controversy if they led to more abortions. However, Matthew Rabinowitz, chief executive of Natera, said that if a adult female were intent on terminating a pregnancy based on paternity, she could even so get an invasive test. And Dr. Dhallan of Ravgen said the exam could persuade women who learned they were pregnant after a rape to keep the baby if they learned the rapist was non the father.
Ravgen's test has been used in a murder example. In 2008, Michael Roseboro, a funeral home director in Lancaster Canton, Pa., was accused of killing his wife, Jan, whose body was found in the family unit swimming puddle.
To establish a motive, prosecutors wanted to prove that Mr. Roseboro was having an thing with some other adult female, who was pregnant. But they did not want to expect until the baby was born.
"Nosotros became concerned that she might have an abortion, or something would happen and we'd never be able to determine whose child it was," said Craig Stedman, the district attorney in Lancaster County.
The testify from the prenatal test was non introduced at trial, however, because Mr. Roseboro eventually conceded that he was the father. Mr. Roseboro, who all the same proclaims his innocence in his wife's death, was sentenced to life in prison.
It is possible that early testing could mean more paternal support for a meaning woman.
One Seattle-area woman said that when she was pregnant, with two possible fathers, "Neither one really wanted to be involved and so find out the baby wasn't theirs later on."
When the prenatal test showed that the father was her former boyfriend, he attended the delivery and supported the child. The woman spoke on the condition of anonymity, explaining, "I'm not proud of not knowing who my son'southward begetter was."
In some cases Deoxyribonucleic acid is not destiny. Ms. Herndon's examination showed that the baby was not her ex-boyfriend's. Simply they got back together and married, and he accepted the kid, who is now 16 months one-time.
"We view our daughter as ours, mine and my husband's," Ms. Herndon said. The biological father sends gifts and pays child support.
Source: https://www.nytimes.com/2012/06/20/health/paternity-blood-tests-that-work-early-in-a-pregnancy.html
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