Biological sample collection cards have a wide range of specific applications, mainly including the following fields:

Disease Screening
- In neonatal disease screening, heel blood can be collected with collection cards to detect genetic and metabolic diseases such as phenylketonuria and congenital hypothyroidism, enabling early detection and treatment. In terms of infectious disease prevention and control, collection cards can be used to collect pharyngeal or nasal swab samples for the detection of influenza virus, COVID – 19 virus, etc., facilitating epidemic monitoring and patient diagnosis.
Disease Diagnosis and Monitoring
- Doctors can use collection cards to collect patients’ blood, saliva and other samples to detect indicators such as blood glucose, blood lipids, and tumor markers, assisting in the diagnosis of various diseases such as diabetes, cardiovascular diseases, and cancer, and monitoring the treatment effect and disease progression. For example, during cancer treatment, blood samples are regularly collected to detect changes in tumor markers to evaluate the effectiveness of the treatment plan.

Individual Identification
- At crime scenes, collection cards can be used to collect biological samples such as bloodstains, hairs, and dander. Through DNA analysis for individual identification, it helps the police to identify suspects or provide evidence for cases. In scenarios such as traffic accidents and disaster accidents, collection cards can also be used to collect biological samples from victims for identity confirmation through DNA comparison, providing comfort to family members and a legal basis.
Paternity Testing
- Collection cards are often used to collect oral mucosal cells or blood samples from parents and children for DNA paternity testing to determine the parent – child relationship, which is of great significance in fields such as legal disputes and immigration applications.

Genetic Disease Prediction
- Saliva or blood samples can be collected with collection cards to detect an individual’s genes and analyze whether there are gene mutations related to genetic diseases, such as BRCA1 and BRCA2 gene mutations related to breast and ovarian cancers. This helps people understand their disease risks in advance and take preventive measures.
Pharmacogenomics
- By collecting patients’ biological samples with collection cards, gene loci related to drug metabolism and efficacy are detected. Doctors can formulate personalized medication plans based on patients’ genetic characteristics, improving the effectiveness and safety of drug treatment and avoiding adverse drug reactions.

Population Genetics Research
- In wildlife conservation and ecological research, collection cards can be used to collect samples such as animal hairs, feces, and blood, and analyze the genetic structure and genetic diversity of populations, providing a scientific basis for protecting endangered species and formulating reasonable conservation strategies.
Microbiological Research
- Collection cards can be used to collect microbial samples from the environment, such as microorganisms in soil and water samples. By analyzing the gene sequences of microorganisms, research on the community structure and ecological functions of microorganisms can help understand the functions and evolution of ecosystems and develop new microbial resources.