Posted on | March 7, 2012 | Comments Off
Genetic testing, also known by the name of DNA testing, is used as a test for genetic disorders involving examination of DNA molecules. Cases relating to child paternity are also solved with the help of genetic tests.
Forms of genetic testing
Genetic testing is of varied types and is used to help with the diagnosis of various autoimmune and chromosomal disorders. Links have been found between autism and genes, depression and even the onset of menopause.
Common forms of genetic testing include:
Screening of fetus or of a new born: Screening of a newborn baby is done to identify certain genetic disorders that might cause problem in later life. Early identification can help get treatment in the childhood itself. Phenylketoneuria can be cured at an early stage if screening of the newborn is performed. Phenylketoneuria refers to a genetic disorder that causes mental illness, if left unchecked.
Testing for parental genes: Parental testing is done with the help of special DNA markers and help identify similar inheritance patterns between two or more related individuals.
Forensic identification: DNA sequencing and genetic fingerprinting are commonly used for legal purposes in forensic identification. This is generally used in solving cases related to crime. This type of genetic testing is of particular significance in ruling out or implicating a person in a crime. Moreover, it is widely used for the identification of unidentified bodies – the DNA taken from the body can be compared with the DNA of person they suspect might be a relative.
Blood, hair and skin samples are used in genetic testing and the techniques used are constantly being researched- it is today possible to work with minute and highly degraded samples of genetic material.
Posted on | June 9, 2011 | Comments Off
The at home paternity test kit has made paternity testing so much more uncomplicated and straightforward. You really need not do things through a hospital or clinic as the home-kit makes it possible to collect your own DNA samples.
Collecting your own DNA samples does not of course mean you will get the results of your DNA test there and then. It is not quite anything like a pregnancy test which tells you a few seconds after the instant you do it whether you are expecting a child or not. Paternal verification DNA Testing is more complicated. With an at home DNA testing kit you will simply collected your DNA samples and then send these off for laboratory analysis.
How do I collect my DNA samples?
Your at home paternity test will contain a pair of oral swabs per person. Oral swabs are very easy to use and hence why they are the standard method for sample collection for all DNA tests. Oral swabs are simply rubbed on the inside of the mouth; doing this collect saliva (in fact they are sometimes called saliva DNA samples) but the DNA is not actually in your saliva but rather in your cheek cells. Cheek cells will detach themselves as you rub the swab in the mouth.
Normally, you will be told not to eat or drink anything for around one hour before the test; this is to make sure that DNA samples do not get contaminated with any food or substances that may be contained in what you have eaten or drunk.
Your DNA testing kit will also contain a set of instructions which are normally not more than a couple of points. Most serious companies will also provide consent forms: these are extremely important and you will need to fill these in carefully providing some details and signatures.
The at home paternity test kit is very simply to use and completing the test will very unlikely pose any kind of problem whatsoever
Posted on | April 20, 2011 | 1 Comment
Scientists have been studying genes to learn more about autism. Most people have an idea of what autism is- the condition is not rare amongst children and affects their ability to integrate and develop relationships with other people.
These individuals often have problems interacting with the world around them making schooling, education, socializing and family life hard.
To be more precise, Autism is actually Autism Spectrum Disorder- this is because there is such a huge range of types of autism that is hard to classify them under just one heading because they are not all the same; people with autism can vary immensely from one to the other.
Types of Autism
- Childhood disintegrative disorder
- Rett Syndrome
- Pervasive development disorder
In terms of genes and the genes that might cause autism, new, revealing research has emerged. There are links between the genes responsible for autism and other illnesses. Genetic mutations take place in kids with the disorder that cause it to happen. Children without these mutations do not develop autism. The genes that are linked to autism are often located next to other genes which are themselves responsible for other brain disorders. These disorders include:
- Hyperactivity and ADD (attention deficit disorder)
- Obsessive Compulsive disorders (OCD)
- Bipolar Disorders
Genetic testing and the studies on the genes causing autism continue. Scientists need to find out why, for example, boys are more likely to be affected than girls. How many actual mutations are there and whether each form of autism is linked to its own peculiar gene?
Twin studies have shown that identical twins are much more likely to share autistic traits. This proves there is a genetic component. Genes are responsible for autism.
Posted on | March 17, 2011 | Comments Off
Today people are sending samples in for a dog poo DNA test. Normally people seeking to do this test do it because they have found an unwelcome dog’s poo where it should not be and thus, in an attempt to find the dog’s owner, they send in samples of the dog stool in order to be able to able to find the culprit responsible for the mess- yes it is the dog, but ultimately, a dog’s owner is responsible for cleaning up after their pet.
Walking in dog poo is indeed unpleasant as is finding dog poo in public and private spaces. In many cities, dog waste has become a real issue. People are often indifferent or too lazy to clean up after their dogs; they wait for the dog to poop and then just walk away from it.
Having a dog DNA stool test means authorities can clamp down on these inconsiderate individuals. Taking full responsibility of your dog is mandatory to any dog owner and not doing so is highly irresponsible. DNA testing has really started to take on new dimensions and unimagined uses- a dog stool DNA test can accurately link the DNA in a stool back to its dog and if the dog is registered as belonging to an owner- back to its owner. The testing of dog poo requires forensic analysis which could be quite expensive. Ideally, fresh stools would need to be sent for analysis as old stools might provide inconclusive results. Some states and governments have already introduced databases within which they have the DNA profiles of all dogs. If a dog stool is found in a public space, a sample of it is taken and the DNA in it compared against the profiles of thousands of dogs in the database. A match means you have found the dog and its irresponsible owner.
Some labs have even gone as far as to develop a specific test that links the DNA in the poo back to its owner. If the government has a database with the entire dog’s DNA of a given area, town or city then catching these felons will not be hard. The poo can be collected with a swab and placed in a suitable container which can be provided by the lab that will do the testing.
The dog poo DNA test can help solve many issues but of course, some argue about the issues: if dog owners do not pick up their dog poo, would a random passerby?
Posted on | February 17, 2011 | Comments Off
Traditionally, the main source of DNA was blood and this idea has really stuck so that many still ask about paternity testing with blood; paternity testing with saliva sounds odd. Blood is now considered to be out-dated and saliva paternity tests have become the standard.
DNA and paternity testing
DNA is found throughout all nucleated cells in the body. Only cells containing a nucleus contain the necessary genetic material for a paternity test. Paternity testing with blood is thus accurate because blood contains white blood cells in large numbers and these cells are ideal for extracting DNA. Moreover, in the days when DNA testing was still evolving, scientists needed to work with very large numbers of cells whilst today it is possible to work with far smaller samples with equal success.
A saliva paternity test offers a very high success rate. This sample is collected by means of a simple mouth swab which is rubbed for ten seconds on the inside of the mouth. The rubbing inside the mouth causes exfoliated cheek cells to stick to the swabs. These cells are just as good as blood cells for a paternity test.
Paternity testing with blood: The two main blood samples
One can either submit blood stains which may have been collected from a wound onto a Kleenex or perhaps a bandage. These can simply be sent in a paper envelope. These samples will need forensic DNA testing and not only will there be an added cost, but in the case of blood stains there is a small chance of sample failure. However, the chances of a laboratory successfully extracting DNA from the sample is 75%.
The other option is to have a medical blood draw. This means making an appointment with a doctor or clinic, waiting rooms and queues and moreover, dealing with dread many people feel when having their vein punctured with a needle. Children may be particularly distressed by this procedure. The success rate with a medical blood draw is 95%.
Advantages of a saliva paternity test over a paternity test with blood
The main reason for choosing saliva is the ease and painlessness of collecting the sample, the costs and medical appointments saved and the very high success rate -95%- of this sample. Even court ordered paternity tests are done using saliva samples.
Blood can also be an issue if you need to send it by post for laboratory testing. The postal services are very weary of blood- is it pathogen free? Is it packed in the right leak-proof container cushioned with the right material?
A paternity test with blood has become discouraged for very valid reasons- there is no reason to opt for this sample when one can easily opt for a paternity test with saliva.
Posted on | December 24, 2010 | Comments Off
homeDNAdirect Ireland would like to wish you a prosperous new year. We have sealed 2010 helping countless clients solves issues they had in terms of paternity testing or helping then establish whether they are truly related to people they suspect are their relatives by means of relationship tests. and in this way helping them move on with their lives. We will consistently strive to improve or rather perfect our customer care services and excel in professionalism and technical competence of what we offer.
We hope your new year will be decidedly positive and that it will bring much in terms of relationships with your family and friends. The New Year is not just about a change of the date on the calendar- it is about a new beginning. A new beginning brings new opportunities and experiences.
For us, at homeDNAdirect, the New Year will bring new business endeavors such as new DNA tests- we plan to launch our non invasive pregnancy paternity testing. Whatever we do, we always abide to our company mission to provide outstanding service and quality DNA tests. Our websites for all the countries we operate in are always being revised and new content added. Anyway, so back to the issue at hand, we wish you a lovely New Year and also thank you for choosing homeDNAdirect Ireland.keep looking »