How Can I Test If Twins Are Fraternal Or Identical?

Category: Twin Zygosity DNA Testing

You can order a twin zygosity testing kit online, and it comes with four oral collection swabs along with clear instructions. Here’s how the zygosity testing process works:

  1. When the kit arrives, take two of the swabs and gently rub it on the inside of each of your child’s cheeks. Keep doing this for about 15-20 seconds, making sure to collect enough cells from their mouth on the swab.
  2. Allow the swabs to air dry, and then place them carefully into an envelope. Don’t forget to write your child’s name on the envelope for identification.
  3. Send the envelope with the oral swab kit back to our lab, and we will analyze the samples in our laboratory.
  4. You should receive the results of the DNA test in one business day. You will receive the results in a PDF that can be printed for a permanent copy, by email,.