Many years ago when the first DNA testing kits arrived in the market for home use there was a flood of bad and defective products which were mainly found online. These test almost destroyed the good quality brand names because most of the testing kits that were being brought online were causing all kinds of problems.
After a while the stem of knock off testing kits slowed and now you should always buy a kit that has been approved by the local or federal government. America has many good quality DNA blood testing laboratories that work for applicants all over the world.
The blood testing kit will reveal a variety of personal facts about your family and family history and now that the testing kits have been refined they are offering a guarantee to go with each kit that is sent out. Make sure that you read the instructions carefully and refer the the guarantee if you have any queries.