Saliva DNA collection cards are tools used to collect saliva samples for obtaining DNA, and their specific applications are mainly reflected in the following aspects:

Disease Diagnosis
They can be used to detect diseases related to genetic factors. For example, genes susceptible to certain hereditary cancers, cardiovascular diseases, etc. can be identified. By analyzing the DNA in saliva, doctors can assess an individual’s disease risk, enabling early prevention and intervention. Additionally, these cards can be utilized to detect the DNA of pathogens causing infectious diseases, such as hepatitis B virus and human papillomavirus, assisting in disease diagnosis and treatment monitoring.
Drug Research and Development
During the process of drug research and development, saliva DNA collection cards can be employed to collect DNA samples from subjects for pharmacogenomic studies. By analyzing individual genetic differences, understanding how drugs are metabolized and reacted in different populations helps in developing more targeted drugs with better efficacy and fewer side – effects, thus achieving personalized medicine.
Disease Screening
In neonatal disease screening, samples collected using saliva DNA collection cards can be used to detect genetic metabolic diseases such as congenital hypothyroidism and phenylketonuria. Early detection and treatment can prevent serious impacts on the growth and intellectual development of newborns.

Identity Identification
At crime scenes, if traditional biological samples like blood and hair cannot be obtained, saliva may serve as an important source of DNA. Saliva samples collected with saliva DNA collection cards can be compared with the DNA databases of suspects or missing persons. This helps the police identify suspects or locate missing persons, providing crucial clues for solving cases.
Paternity Testing
Saliva DNA collection cards are one of the commonly used tools for paternity testing. By simply collecting saliva samples from parents and children, the genetic loci in the DNA can be detected to analyze the likelihood of a parent – child relationship, providing a scientific basis for resolving legal issues related to parent – child relationship disputes.

Genetics Research
Researchers can use saliva DNA collection cards to collect saliva samples from a large number of individuals, construct gene databases, and conduct large – scale genetic research. For instance, studying human genetic diversity, genetic evolution patterns, and exploring the interaction between genes and environmental factors on human health and diseases.
Personalized Medicine Research
Through the analysis of a large number of saliva DNA samples, researchers can gain in – depth understanding of the relationship between different individuals’ genetic characteristics and disease susceptibility, providing theoretical support for the formulation of personalized medical programs. For example, predicting an individual’s response to specific drugs based on their genetic information, thereby tailoring the best treatment plan for patients.

Genetic Testing Services
Some health management institutions offer genetic testing services based on saliva DNA. Consumers can collect their own saliva samples to understand their genetic information, including aspects such as nutritional metabolism, sports genes, and skin characteristics. Thus, they can develop personalized diet, exercise, and lifestyle adjustment plans according to their genetic characteristics, achieving precise health management.
Tracking of Family Genetic Diseases
For people with a family history of genetic diseases, regularly collecting samples using saliva DNA collection cards for testing can track genetic changes, promptly detect potential health risks. At the same time, it also helps family members understand their genetic status and take corresponding preventive measures to reduce the likelihood of disease occurrence.