Saliva swab collection kits are widely used in multiple fields:

I. Forensic Medicine Field

1. Individual Identification and Paternity Testing
   • In crime scene investigations or identity identification, the saliva swab collection kit can be used to collect saliva samples from suspects or victims. The DNA information in saliva is highly specific to an individual. By comparing it with the DNA in biological evidence found at the crime scene (such as saliva stains, bite marks, etc.), it can help determine the identity of the suspect or victim. In paternity testing, similar to medical genetic testing, by collecting saliva samples from parents and children and conducting DNA analysis, the paternity relationship can be determined, providing scientific evidence for judicial cases.
2. Drug and Toxicant Detection
   • When it is necessary to detect whether an individual has ingested certain drugs or toxicants, the saliva swab collection kit can be used. The concentration of drugs or toxicants in saliva can, to a certain extent, reflect the individual’s recent intake. For example, in drunk – driving detection, in addition to blood testing, saliva testing is also an optional method. By detecting the alcohol content in saliva, it can be quickly determined whether an individual is driving under the influence. For the detection of some drugs, the saliva swab collection kit can also be used to collect samples to detect the drug components in them, serving as an auxiliary means for law enforcement.

II. Scientific Research Field

1. Microbiology Research
   • Scientists can use the saliva swab collection kit to collect saliva samples to study the composition and function of the oral microbiota. The oral cavity is a complex ecosystem containing various bacteria, fungi, and viruses. By analyzing saliva samples from different populations and in different health states, the relationship between the oral microbiota and oral health, as well as systemic diseases (such as cardiovascular diseases, diabetes, etc.) can be understood. For example, some oral bacteria have been found to be related to the development of cardiovascular diseases. Through long – term monitoring of samples collected by saliva swabs, the mechanism of this association can be studied in depth.
2. Psychology and Behavioral Research
   • In psychology and behavioral research, the saliva swab collection kit can be used to collect samples of biomarkers related to stress responses, emotional states, etc. For example, cortisol in saliva is a stress hormone. By collecting saliva samples from individuals in different stress scenarios and detecting the cortisol level, the individual’s stress response pattern can be studied. In addition, for the impact of some behavioral habits (such as smoking, drinking, etc.) on the oral physiological state, the saliva swab collection kit can also be used to collect samples to detect relevant indicators (such as changes in oral mucosal cells, alterations in saliva components, etc.).