How To Swab Cheek For A DNA Test?

How To Collect A DNA Sample?

  1. Ask the patient to rinse their mouth with clean water before you start collecting the samples.
  2. Wear the gloves throughout the rest of the procedure
  3. Take the swab from its packaging without allowing it to touch any surface or object.
  4. Hold the swab between the thumb and the forefinger and insert the brush into one side of your mouth between the upper gum and the inside of the cheek. Twirl the cheek brush against the inner cheek while pressing firmly.
  5. Use an upward and a downward motion in the front and backward direction and then back to the front. Time each collection to be about 30 seconds for every swab. Sample collection is recommended at the points bearing the maximum mucosal areas.
  6. Do not saturate the swabs with an unnecessary amount of saliva, although you can moisten an area with saline using a swab is allowed.
  7. Remove the swab out of the patient’s mouth and leave it to air dry by placing it on a sterile surface for the next five minutes.
  8. Put the swab back to its original container and seal the lid.
  9. Repeat this collection procedure about for more times to give you five samples on average.
  10. Place the swabs into the labeled envelope.
  11. Forward the samples for processing to the laboratory. Please note, the average turnaround for paternity testing results to be completed in 2 to 3 business days.

How accurate are mouth swab DNA tests?

Mouth swab DNA tests, also known as buccal swab tests, are considered highly accurate. They are able to determine genetic relationships, genetic information with a high degree of accuracy, often above 99.9% and higher.

However, the accuracy can depend on the quality of the sample obtained and the specific laboratory procedures followed. Some factors can lead to inconclusive results, such as contamination of the sample.

How long do DNA cheek swabs last?

DNA cheek swabs can last for a long time if stored properly. The exact duration can vary, but generally, they can last on average 6 months to year or longer. However, it’s important to store your samples at room temperature. It’s also crucial to ensure that the swabs are completely dry before storing to prevent any potential degradation of the DNA.

How long does DNA stay in your mouth after kissing?

Human DNA longevity on a surface will vary depending on the environment. For example, if the DNA was exposed to sunlight, rain, or water the length of time on average is a couple week to have a chance of a DNA sample collector being able to acquire a usable DNA sample.


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