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Methods and characteristics of DNA flocking swabs

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Methods and characteristics of DNA flocking swabs

What is a DNA flocking swab?

The top of DNA flocking swab is nylon fiber structure. Nylon fiber is attached to the surface of medical ABS plastic rod by electrostatic field in order to form a brush like layer. The layers are fully parallel and perpendicular to the surface of internal rod. DNA is collected through this brush head. At present, huachenyang technology flocking swab has obtained the United States EUA, and obtained the export right in many countries.

What are the advantages of flocking swabs to collect DNA?

Sample collection process: the unique structure at the top of the flocking swab can greatly increase the number of samples collected.

Sample elution process: brush layer structure can release almost all the collected samples.

Why are flocked swabs more advantageous for micro DNA collection?

Due to the internal structure of the top filament winding of the traditional cotton swab, the sample will be dispersed and retained in the fiber during sampling, resulting in lower DNA precipitation efficiency and even false negative test results.

Because of the unique structure of the top of the flocking swab, it can almost completely extract and precipitate a small amount of DNA, so the flocking swab has more obvious advantages in the collection of trace DNA.

The principle of DNA collection and precipitation by flocking swab?

(1) Through the directional wiping effect of brush fiber layer, the cell samples can be completely captured;

(2) Because the cell samples are concentrated near the surface of brush fibers, more than 95% of the samples can be released.

(3) Capillary motion between nylon fibers at the top of the flocking swab creates a strong hydraulic pressure for absorbing liquid or cellular samples.

Application of DNA flocking swab

(1) First of all, open the swab package and take out the swab carefully. Pay attention not to touch anything before sampling to avoid contamination

(2) The swab is inserted into the part to be sampled, and the sample is taken by staying, rotating or wiping

(3) Take out the swab gently. Generally, put the swab into the virus sampling tube, break it at the broken place, discard the end of the swab, tighten the cover, and send it for inspection as soon as possible.

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