Y Chromosome DNA Test

What is a Y Chromosome DNA Test?

A Y chromosome DNA test is a type of genetic testing that looks at the Y chromosome. This chromosome is found in males and is responsible for male characteristics. The Y chromosome is passed down from father to son, so this test can be used to trace the paternal line. This test can be used to find out the origins of a person's paternal line, and can also be used to confirm or refute a paternity claim.

How Does a Y Chromosome DNA Test Work?

A Y chromosome DNA test will usually look at a number of different markers on the Y chromosome that are known to vary between populations. By looking at the patterns of variation in these markers, it is possible to infer which population a person’s ancestors came from.
The most useful marker for this purpose is the so-called “SNP” (Single Nucleotide Polymorphism). SNPs are variations in the DNA sequence that occur at a single point in the genome. They are relatively common and tend to be more numerous in non-coding regions of the genome such as the Y chromosome.

Benefits of a Y Chromosome DNA Test

A Y chromosome DNA test can be very beneficial for a number of reasons. One of the primary benefits is that it can help to determine paternity. This is especially important if you are considering legal action or if there is any doubt about the paternity of a child. A Y chromosome DNA test can also be used to confirm or disprove a family relationship. This type of testing can also be helpful in determining the origins of a person's paternal line. Additionally, a Y chromosome DNA test can be useful in cases where traditional genealogical research has reached a brick wall.

Why Might Someone Need a Y Chromosome DNA Test?

There are a few reasons someone might need to take a Y chromosome DNA test. One reason might be that they are trying to determine their paternal lineage. This type of test can help identify direct male ancestors, which can be helpful in cases where paper records are not available or have been lost.
Another reason someone might need to take a Y chromosome DNA test is if they are trying to prove paternity in a legal case. This type of test is often used in child support, custody and inheritance cases. The results of this test can provide evidence that the man is or is not the father of the child in question.

How to Get a Y Chromosome DNA Test?

1. Book your appointment with a genetic testing lab. Your doctor can order a Y chromosome test to be done at the Forensic Genetics Laboratory. You can also book your own appointment without a doctor’s involvement. 
2. On the day of the appointment, a sample of your DNA, typically through a cheek swab, will be collected and sent for testing. You will also pay the associated fee once a test sample has been collected.
3. Wait for your results. Results are ready in 3 business days for rush service, and 5 business days if you ordered a standard service. 

*This test is for personal use and is not admissible in court. Please see our ‘Legal DNA Test’ for court use.