Peekaboo test

At 8w2d I got my blood drawn from a testing lab near me for the gender. I didn’t know they would be using Peekaboo, they didn’t say and I didn’t ask. Results came back in an email today saying a girl. Is Peekaboo a good one to go off of for results? Was having a strong feeling it was going to be a boy this time, I was right with the last 2 with the feelings. This one kinda just took me as surprise saying a girl. Has anyone used peekaboo and it been right?