What do you need to do dna

1. Go to the drugstore to buy a medical cotton swab stick first, and ask the appraiser to rinse his mouth with water (don't use toothpaste) when he gets home;

2. Use a cotton swab to rotate and wipe the cheek with the most meat on the inner wall of the mouth.

1.5~3.0 (slightly hard), scrape in the same way, and take six pieces from one side of three pieces.

3. Put the cotton swab stick on white paper to dry naturally, then put it in a paper envelope bag (remember not to seal it in a plastic bag) and mark it.

2.-3. Send (or mail) it to our evaluation center within days;

Precautions for oral swab collection:

1. Breast-fed children should avoid using oral mucosal cells;

2. Put the samples of different appraisers into their own envelopes, and mark the envelopes, remember not to put them in plastic bags and seal them;

Second, blood collection requirements:

Ensure that the donor has not received blood transfusion or bone marrow transplantation in the last two years.

Methods of collecting blood stains by yourself:

1. Go to the drugstore to buy medical gauze first, and then let the appraiser tie it on your finger when you get home (the baby can choose the heel);

take (medicine)

3.~4 drops of blood are dripped on the medical gauze, and the blood volume should not be less than 50 cents;

3. Put the collected blood gauze in a cool and ventilated place to dry naturally, put it into a paper envelope bag (remember not to seal it in a plastic bag), mark it, and mail it to us within 2 hours. -3. A few days.

Methods of collecting blood stains in hospitals;

1. You can go to the hospital and ask the medical staff to extract 1. ~

2. ml of blood,

2. Pour the blood directly on the medical gauze and put it in a cool and ventilated place to dry naturally.

3. After the blood-stained gauze is dried, put it in a paper envelope bag (remember not to put it in a plastic bag for sealing), mark it, and send (or mail) it to us within 2 hours. -3. A few days.

Third, the hair collection method:

1. The appraiser who provides suggestions for hair identification is preferably over five years old, and the hair must be more than six hairs with hair follicles;

2. Put the pulled wool into a paper envelope bag (remember not to wrap it in a napkin or seal it in a plastic bag) and mark it. 2.

3. Send it or mail it to our appraisal center in a few days;

Precautions for hair collection

1. If the child is too young, please try to avoid using this method, because the child's hair follicles are not fully developed and may not be able to extract complete DNA information;

2. Make sure that the appraiser has not dyed for a week, and the hair must be pulled out, and it is not advisable to cut or lose hair.