DADI Blog

What is DNA Testing?

Posted by admin on April 27th, 2006

Before we can talk about DNA testing, let us discover what exactly DNA is. DNA is the abbreviation for Deoxyribonucleic Acid. Way back when, fingerprints were the ultimate sample of DNA. They were the only way to identify a person. Now almost anything can be used as a sample. That includes saliva, teeth, semen, and even bones. This narrow, thinly shaped piece of evidence is often used in criminal cases as well as paternity. All humans and animals possess DNA. One single hair can determine who you are if that is what the question is. 

DNA testing has given forensic science an upper hand. It is commonly used today in many court cases. This method of testing is very sensitive. Accuracy of this test depends on the collection process and the specimen’s condition. It has a great ability to find small amounts of DNA in any situation. Overtime, specimens collected can last and are able to hold up in a harsh, unpredictable environment. The downsides to this form of testing are pretty general. A laboratory is used for processing the samples. The laboratory can be a bit pricey. The processing can be slow, but is faster than the methods used in the past. 2 to 3 days may be all the time you need for accurate, reliant results. When DNA testing is used, a laboratory may keep a database for periods of up to ten years. These databases can include all crime offenders or may be sub categorized for easy finding. DNA testing can also play a part in testing urine for traces of illicit drug abuse.

DNA tests are the most advanced test for paternity or maternity. Each parent gives 23 chromosomes to their child. These are later used to determine paternity. These tests may be preformed before a child is born. A chorionic villi sample may be taken at 10-13 weeks. Amniocentesis can be done between 14 and 24 weeks. A blood test done on the parents will determine paternity. A cotton swab test is the most common test performed after a child is born. Each parent, the one known and the one in question are both tested. The child is as well. For the best results, all tests should be done on the same day. The cheek swabbing is what most prefer to a blood test. The procedure is non-invasive and painless. As you have read, DNA testing is vital to everyday life, even more so when questions need to be answered. The longer you wait for answers, the more doubt may consume your thinking. When you wish to provide answers to a fatherless child or a victim of a serious crime, look no further than to DNA testing. It is a sure fire way to flawless result.

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