[Parent-Child DNA Test] \"I truly think I'm glad I requested the test.\"

Thank you very much for your careful and courteous handling this time.
My son grew up always being told by those around him that he doesn't look like his father, and he started saying that he felt they might not really be parent and child and couldn't sleep at night, so I decided to take the plunge and request the test.
As a result, he himself seems relieved, and I truly think I'm glad I requested the test.
I may possibly request a formal certificate, and if so, I would appreciate your help at that time.