7 day check up... Has anyone gone through this?

Liz
Went to the dr and got our state test results the ones they take at hospital to check if there's any abnormalities in the baby blood they can detect early. Well the dr just told me that my baby had some abnormal metabolic test result that he was going to test again and let me know the results next week.. 
Anyone had a faulty test result? Or dealt with this disorder before? 
:"( I can't stop crying and worrying:((