Insurance doesn't cover blood test to find out gender, right?

Daniela • In love with my little prince 💙
Hi ladies!
My OB mentioned a blood test that I can take at my 11.5 week appointment that has a 90-something percent accuracy rate in detecting the baby's sex. I don't think insurance (mine is Blue Shield of CA PPO) covers that. Any experience here? Should I just wait til like 20 weeks?