Everything you ought to know about DNA Tests

Everything you ought to know about DNA Tests

Genetic testing tools mark a revolutionary milestone in medical diagnostics. While expensive in the past, they are accessible and affordable now. Finding facilities that offer home dna tests can be daunting. It is essential to understand the process before going through the test. Over 40% of the human population is unaware of most DNA test applications. Read on to what your DNA can say about you.

How do DNA Tests work?

Genetic fingerprints are as unique as fingerprints (even more so). These exist in a specific order that says more about your body than you know. They are present in any bodily sample, from your saliva to your hair. 

Scientists or lab technicians compare these sequences of letters to determine relationships, genetic disorders, diseases, and the probability of diseases occurring further down the bloodline. 

Scientists collect a sample; this could be a spit sample or some hair or fur (if you’re testing an animal). They subject it to a few chemicals and genetic sequencing to figure out the ‘letters’ or nucleotides in your DNA. These letters give scientists copious amounts of information about your body and health. 

Applications of DNA Testing


With the number of open relationships steadily increasing, paternity tests have become more common. Scientists compare two DNA samples – one from the child and the other from the alleged father. 

Upon comparing these samples, millions of these letters would be different, but there would be striking similarities if the test is positive. 

Laboratories provide clients with detailed reports and matching sequences or fragments to prove their findings. 


In many countries, having a DNA registry or pool can assist people in finding near and close relatives. Such knowledge can be comforting and emotionally fulfilling for those without families. 

Machine learning and data management allow scientists to compare a single sample sequence with several others to identify plausible matches. 

Pet Projects

For many, pets remain their sole companion. Labs accept pet saliva or fur as eligible samples. While paternity and relative tests aren’t available, their DNA can say much about their general health. 

The report can tell you how genetically susceptible they are to specific diseases and disorders. They also clarify breed purity and other interesting facts. This knowledge can help you care for your pets better. 

Specific Relations

By comparing these letters, scientists can determine the relationship between two individuals. Sisters, Aunts, Nieces, and Cousins have different levels of similarity. However, parental similarity will always be the maximum. 

Genetic Diseases

DNA testing is one of the pillars of child planning. Genetic disorders are, more often than not, irreversible. One can only treat the symptoms. These conditions bring the ‘quality of life’ under question. Genetic disorders are several enough to fill a telephone directory, from hyperplasia to cystic fibrosis

Worry not because home dna tests can screen for most of these disorders. It is always better to know the most about having children before choosing to do so. 


DNA samples can either be spit, blood, hair, or amniotic fluid. Other DNA traces can contaminate a sample, and it is easy to do so. 

There should be no intake at least 30 minutes before sample collection (gum included). Kissing involves an exchange of DNA with saliva, and if your sample is salivary, the test will be invalid. 

Brushing your teeth, mouthwash, and smoking can also impact the sample collected. 

Read through the collection procedure and follow the rules carefully.  Go through the process under authentic supervision from reputed laboratories.