How often to change DNA samples?

1. Nails: If you want to use nails as a DNA sample, we recommend that you re-create another sample every month.

2. Saliva: It is useful for 3 days.

3. Buccal Skin Cells: After 4 or 5 days, the specimen need to be changed.

4. Blood: Blood could be good for about 5-6 days.

5. Hair with Follicles: Hair samples are good for about two days.

More information about DNA samples, please click this link:

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