Patient's question:
I have a soft and cute baby, who is now 4 months old. But the other day when I took my child to the county hospital for a health check-up, the doctor carefully examined and found that my baby suffers from phenylketonuria. Hello, what tests are needed for phenylketonuria?Doctor's answer:
Generally, there is newborn screening. Guthrie is a screening method that was previously used, where dry blood filter paper is placed on a culture plate with a bacterial inhibitor similar in structure to phenylalanine. It is measured 2 to 3 days after the infant is changed. The normal serum phenylalanine concentration is 1 to 3, while in patients it is twice the normal level. It can also be inferred using urinary porphyrin. It can identify various phenylketonuria issues.