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The cell – free DNA blood collection tube has the following characteristics

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  1. Effective preservation of cell – free DNA:
    • High stability: The tube contains special additives or preservatives that can prevent the degradation of cell – free DNA in the blood. For example, some blood collection tubes contain anticoagulants such as EDTA and specific DNA stabilizers, which can maintain the structural integrity of cell – free DNA and keep it stable for a certain period of time, facilitating subsequent detection and analysis.
    • Interference suppression: It can inhibit the rupture of nucleated blood cells and the release of genomic DNA, avoiding interference with the detection of cell – free DNA and ensuring the purity and accuracy of the collected cell – free DNA.
  2. Long sample storage time: Usually, under suitable temperature conditions, such as 6 – 37 °C, the collected samples can be stably stored for several days to two weeks or so. This makes the collection, transportation, and storage of samples more convenient, without worrying about sample deterioration in a short time, which is very beneficial for some research and testing projects that require long – distance transportation or long – term sample storage.
  3. Convenient to use:
    • Simple operation: Compared with traditional plasma sample preparation methods, using the cell – free DNA blood collection tube to process patient blood samples is more convenient, saving manpower and time. Generally, it only needs to collect blood into the blood collection tube according to the conventional venipuncture blood – collection method, and then gently invert and mix.
    • Easy to plan and arrange: Samples can be stored at room temperature for a long time without special refrigeration or freezing conditions, reducing the requirements and limitations on the storage environment and facilitating the unified management and arrangement of samples.
  4. Wide range of applications: The high – quality cell – free DNA obtained can be used in various clinical medical research, such as early screening of tumors, monitoring treatment effects, prenatal diagnosis of fetal genetic diseases, and diagnosis of genetic diseases; it can also be used for relevant tests in the process of drug research and development.
  5. Good material and safety: The material of the blood collection tube usually has good chemical stability and biocompatibility, will not react with the components in the blood, and has no impact on the quality of the sample. At the same time, safety will also be fully considered during the design and production process to avoid problems such as sample leakage and contamination
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