Which sampling tools can meet the needs of public security criminal investigation forensic doctors?

Which sampling tools can meet the needs of public security criminal investigation forensic doctors?

The following are some common sampling tools that can meet the needs of public security criminal investigation forensic doctors:
Blood collection tools:

Vacuum blood collection tube: It is one of the commonly used tools for collecting blood samples. It draws blood into the tube through the negative pressure principle, which can ensure the safety of the blood collection process and the quality of the blood sample, prevent blood from being contaminated, and the blood collection volume is accurate, which can meet the sample volume requirements of various subsequent blood tests.
Disposable blood collection needle: It is used in conjunction with vacuum blood collection tubes. It has the advantages of safety, hygiene, and convenience. It can quickly and effectively collect blood samples and reduce the risk of harm and infection to the person being collected.

DNA blood sample collection card: It is made of specially treated blood collection paper, which is suitable for blood sample collection, storage and inspection in different regions. The collected blood samples can be directly used for extraction-free amplification reagents without complicated pretreatment. In addition, under normal temperature and dry conditions, blood samples can still be effectively used for composite STR testing after being stored for more than 12 years, which is convenient for long-term storage and subsequent DNA testing and data operation.
Swabs:

Flocked swabs: It is a new generation of DNA sample collection tools designed specifically for forensic medicine. It is suitable for collecting oral cells, saliva, semen, blood spots, dandruff and other test materials, especially for trace DNA. It uses nylon fiber flocking filling technology. The nylon fiber structure on the top can maximize the efficiency of DNA collection and elution. It is specially treated with antibacterial agents to prevent microbial contamination and ensure reliable results.

Oral swabs: It obtains oral exfoliated cells by gently scraping the inner wall of the mouth. It has the advantages of being non-invasive, painless, convenient and simple. It is highly accepted by the subjects and suitable for large-scale screening. The collection kit usually includes a swab, a preservation fluid tube, gloves, a label and instructions, etc. It is easy to operate, and the collected DNA samples remain stable at room temperature, which is convenient for transportation and storage.

Other tools:
Hair collection box: used to collect hair samples. The box is usually equipped with tweezers, scissors and other tools to facilitate the collection of hair with follicles. Hair follicles contain rich DNA and can be used as effective samples for DNA testing.

Exfoliated cell adhesive: can be used to collect exfoliated cells on the surface of objects, such as cells remaining on clothing, weapons, etc., which is of great significance for crime scene investigation and the extraction of trace evidence.
Evidence preservation bag: used to store various biological samples and physical evidence, with good sealing and moisture resistance, can prevent samples from being contaminated, damaged or lost, ensure the integrity and stability of samples, and facilitate subsequent inspection and identification
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