I received results back from heel prick test for my son. It was done when he was 6 days old, however letter says sample was taken when he was over 8 weeks old (he’s only 7 weeks today) therefore they didn’t test for Cystic Fibrosis. Is it possible it’s just a mistake in the letter? What do I do now, as it was important for me he gets tested for all the conditions, this is exactly the reason why I agreed for this test and brought him to the appointment. If I contacy GP can they repeat the test before it’s not too late. I don’t know if I’m being just too anxious, but I am really upset 🙁