Newborn Screening thyroid test

My pediatricians office called today saying my sons newborn screening results came back from the state as abnormal for thyroid levels. His TSH was slightly elevated with a normal T4. I’m a nurse, so I understand that in adults this can be the early signs of hypothyroidism but I wasn’t sure if anyone had similar experience and have it be a false positive for newborns? I’ve read that babies have a tsh surge after birth, so I’m hoping blood work was just done a bit early and it caught that.

We go for a repeat test next week at his next appointment, just wasn’t sure if anyone had any experiences to share with me!

Thanks 😊