If a man had served in the military, his type would be on his dog tags. Even if you don't have this information for everyone, this method may be less expensive than a DNA paternity test. So, before you spend money on a DNA paternity test, you should try to identify the missing blood types. Here's how blood typing works in a nutshell: Types of blood can be determined by using antibodies that bind specifically to different substances in the blood. These antibodies are called antigens. Each person has proteins (antigens) in their blood that match up with the proteins (antigens) in other people's blood. When someone has blood typed against their blood, the antibodies find these matching proteins and attach themselves to them. This is why the blood type of someone who has been blood typed is known as their "type."
How do you determine a person's blood type? You can only determine the type of an individual who has already been blood typed. The three most common methods are looking at the quality of antibodies present in a person's serum, using agglutination tests with blood cells, or identifying specific factors in the blood. The American Red Cross provides free blood typing services through more than 7,000 blood centers nationwide. You can ask your doctor or local blood bank to check your blood type or take your own sample.
Does a person's blood type affect their chance of getting sick? No, but it may affect their chance of recovering from an illness.
A DNA paternity test is virtually 100 percent reliable in detecting whether a guy is the biological father of another individual. DNA testing can be performed using cheek swabs or blood tests. If you require the findings for legal reasons, you must have the test performed in a medical environment. The sample may then be sent to a laboratory for analysis.
In general, DNA testing uses different genes located on each of the 24 chromosomes in every human cell. These genes are called alleles. Each person has two alleles for any given gene, one from each parent. A genetic test looks at these alleles for evidence of similarity. If there's a match between the alleles of the sample and those of the alleged father, then he probably shares that same allele with his child. This means he would also share the same phenotype (physical appearance) as well as the potential to have similar traits.
However, because genetics is only half of the equation when it comes to determining paternity, other factors may come into play. For example, if the mother claims that another man is the father, he may produce evidence showing that he isn't related to her in order to prevent financial responsibility for any future effects that may arise from the pregnancy.
Also, consider that not all alleles present themselves the same way through inheritance. Some may show up only through inheritance from your mother or only through inheritance from your father.
According to Dr. Lee, the quickest option is to quickly check your birth certificate because blood type is occasionally stated in birth records. However, this information isn't always accurate, so it's best to verify with your doctor or hospital.
The American Red Cross also advises that blood types are not usually known until about a year after birth because antibodies can change their appearance. Therefore, if you cannot find any documentation of your blood type, try to remember what factors might have caused you to become allergic to blood. For example, if you had many surgeries as an infant, you may have lost some blood during these procedures and your body would have made antibodies against the blood proteins. These antibodies could then show up in a blood test later in life.
If you cannot find anything related to your blood type on your birth certificate or medical record, there are other ways you can determine yours. The American Red Cross says that most people know their own blood type, but some people may not realize it.
There are two equally accurate methods for determining paternity: Blood tests: At a medical office, the putative father and kid provide blood samples. The samples are sent to a lab for examination by the facility. Swabs of the inside of the cheeks for buccal (cheek) cells: The potential father and child swab the inside of their cheeks for buccal (cheek) cells. These cells are then mailed to a lab for analysis.
In general, blood tests are more accurate than cheek cell tests. But since they involve pricking your finger or toe, many people prefer the noninvasive cheek cell method. A lab will be able to tell you which method is best for you based on what information you provide them with. For example, if you want to exclude certain people from being possible fathers, say doctors or partners, then you should inform the lab of this fact. They can use this information when looking over the results of your sample.
Cheek cells can be collected by anyone who has access to a bathroom mirror. You simply ask the person to wash their face thoroughly with soap and water and then instruct them to rub the inside of their cheek gently but firmly against one side of a bowl or cup. They should continue to do this for about 30 seconds. No pain is associated with this procedure!
The person's skin will now have some small white patches where the cheek cells were harvested. These can be saved for future reference.