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Tag Archive DNA SWAB

DNA Paternity Testing Procedures: Buccal Swab Test Versus DNA Hair Testing

DNA testing has many applications across a broad array of disciplines and industries. DNA profiling is used to establish the identity of individuals largely for forensic purposes and for use in law enforcement services. Personal identification and kinship analysis as well as family relatedness are also popular forms of DNA analysis.
A recent study determined that 1 in 10 Americans ponder questions related to paternity. Establishing a biological relationship between parent and child is significant. Whether for financial support, immigration requirements, emotional reasons, health care tracking, peace-of-mind or even legal situations paternity testing can provide the needed answers.
There are several types of DNA paternity testing procedures:
DNA Blood Test
Paternity testing procedures have historically been conducted in hospitals and laboratories under prior authorization and using a blood draw for specimen.
Today, home paternity testing kits are available at local drug stores across the country. These kits can be used for peace-of-mind and for legal (court-admissible) reasons-using the same laboratory process as hospitals do with blood.
Buccal Swab Test
The method for collecting DNA samples for paternity is through a buccal swab test (also referred to as a DNA mouth swab test or a DNA cheek swab test). Using buccal swabs is just as reliable as using blood but far more convenient.
There are also many other advantages. The use of buccal swabs is non-invasive, and a much easier technique for the collection of DNA samples. Buccal swabs don’t require refrigeration like blood samples do, and they are good for several months after the collection has taken place.
DNA Hair Testing
Special specimens are sometimes used in place of a cheek swab sample. For example, a situation may exist in which the alleged father is deceased or otherwise not available to participate in the paternity testing. Special specimens are considered anything other than a buccal swab test used to extract DNA. Examples of this can be hair follicles (with root attached), toothbrush, q-tips, or tissue samples of any kind.
There are many challenges to DNA hair testing. First, the root of the hair follicle must be attached. DNA is not found within the hair shaft. Secondly, it cannot be guaranteed that a sufficient sample with good quality can be extracted. In a paternity test this could cause an inconclusive result. Thirdly, testing hair is an expensive process. Additional extraction techniques are performed for special specimen and often numerous attempts are made in an attempt to obtain DNA. The extraction cost is separate from the actual laboratory cost in this situation and can be quite an expensive alternative.
Though there are many DNA paternity testing procedures using buccal swabs is a much easier process as opposed to other sample types including hair. Be in the know, purchase a home paternity testing kit today.

Characteristics and advantages of sampling swabs

Characteristics and advantages of sampling swabs

Sampling swab, also known as cervical sampling test, flocking cotton swab, is made up of nylon staple fibers and medical grade ABS plastic rods. The function of nylon staple fibers is like a soft brush, which can effectively improve the collection of cell materials. The capillary movement between fibers forms a strong hydraulic pressure, thus taking liquid samples. When the sample is close to the swab surface, it can be easily eluted. It can be used for bacteriological sample processing, virological cell culture, DFA test, rapid and direct test, enzyme immunoassay, polymerase chain reaction and molecular diagnosis-based detection.

Nylon flocking swabs are widely used and are ideal for bacteriological sample processing, virological cell culture, DFA testing, rapid and direct testing, enzyme immunoassay, polymerase chain reaction and molecular based diagnosis, as well as forensic identification. Similarly, flocking swabs can also be used for influenza, swine flu and avian influenza. Pharynx and throat sampling of respiratory viruses such as hand, foot and mouth.

Characteristics of Sampling Swabs

  1. Different preservation solutions were selected for different types of specimens.
  2. Each set of independent packaging in the big box is convenient to use.
  3. Paper-plastic packaging that is easy to sterilize in the world;
  4. Gamma ray sterilization to ensure sterility;

Advantages of Sampling Swabs

  1. Designed specifically for DNA micro-samples at crime scene, especially for sweat, semen, blood, dandruff, oral cells and other micro-samples with superior collection performance;
  2. The front end is pointed, which is suitable for the extraction of cells in the nail suture of the victim or suspect at the crime scene.
  3. The back end of the swab can be broken, which is beneficial to the automatic extraction workstation for sample extraction.
  4. The whole swab is packed in transparent plastic pipe to avoid biological pollution.
  5. It can adsorb trace samples quickly and has high release efficiency.

The collection system uses nylon flocking swab, which is harmless to microorganisms and can maximize the collection and release of specimens. A large number of clinical experiments show that nylon flocking swab has better collection and transportation effect on clinical microorganism specimens than ordinary sterile cotton swab. It is more advantageous for those specimens that can not be sent in time and placed for too long. It has unique jet implantation nylon fiber technology to increase the collection of specimens. The whole length of the swab is 15cm. The plastic rod has a unique breakable design. The villus texture can collect more target analytes. There is no sample residue. The process of sample processing is accelerated. The swab is sterilized and packed independently. The sterile swab is packed independently.

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