DNA Testing Procedure: Know More About It

When you watch shows like CSI and NCIS, you’ve probably heard about DNA testing procedures all the time. If you are not in the medical field, you might just know about DNA testing based on what these television shows portray.

What exactly is a DNA test? This article will try to piece together some facts about DNA.

For starters, DNA stands for Deoxyribonucleic Acid; it carries genetic information about the body’s cells. In simpler terms, DNA is the basis of every component of the body – eye color, bone density, stature, hair color, etc.

How is it done? A DNA test starts when a blood sample is taken from an individual. DNA can also be taken from a cheek swab. Once the DNA has been extracted, scientists then study the genes that are found along the DNA strand. DNA samples taken by doctors or clinics are sent to genetic testing laboratories for processing. Results usually take about one week to be released.

Why does one subject themselves or their family to a DNA test? Is it really necessary? There are a number of uses for a DNA testing procedure to be performed:

- To test for genetic disorders. Scientists study a particular gene to look for mutations that will confirm if any family member is suffering from a genetic disorder or find out who might be at risk of developing such a disorder.

- A DNA test is done to determine if a family member or members carry genes that are at risk of passing on a certain disorder to their offspring. It is important to note, though, in most cases these individuals do not show signs and symptoms of the disorder.

- It is also done to confirm paternity claims. A DNA test will determine if a child has similar genetic information to a possible father.

- A DNA test is necessary in crime scene investigations, it is a key to proving a suspect is guilty or not. DNA samples that can be found in a crime scene could be sperm cells, blood cells, and other body fluids or cells like hair.

How much does it cost? It actually depends on what type of procedure that needs to be done. Simple paternity tests can cost around $200.

So the next time you are glued to the TV watching CSI, you’ll very well know what the characters are talking about!

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