Genetic samples are typically taken using a blood sample or a small amount of saliva. These samples are used for genetic tests that examine a person's genes to estimate their risk of a particular disease or detect any hereditary diseases.
Methods for Obtaining Genetic Samples
Here's a breakdown of the common methods:
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Blood Sample: A blood draw is a standard procedure where a healthcare professional extracts a blood sample from a vein, usually in the arm. This sample contains cells with DNA that can be analyzed.
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Saliva Sample: Saliva samples are non-invasive and easy to collect. Individuals can often provide a saliva sample at home using a collection kit. The saliva contains cells from the mouth that can be used for DNA extraction.
Purpose of Genetic Testing
Genetic testing plays a crucial role in:
- Estimating the risk of developing specific diseases.
- Detecting hereditary diseases.
- Informing healthcare decisions.
Limitations of Genetic Testing
It's important to note that genetic testing is currently only useful for a few conditions, according to a January 30, 2023, reference.
