Newborn genetic metabolic disease, propionylcarnitine C3

Patient's question:

Hello, my child just turned one month old, and the disease control center asked for a follow-up check.
C3 and ratio were elevated, and a follow-up check was requested to rule out methylmalonic acidemia.
Propylcarnitine (C3) 4.52 ↑ 0.32~4
I would like to ask what to do if it is indeed the case:

Doctor's answer:

Analysis of the condition:
Hello, if there are no symptoms and the increase is not significant, it is recommended to follow up for reexamination.
Suggestions:
Hello, since the changes are not substantial, a reexamination can be conducted for confirmation. If it is indeed this condition, a special diet will be required.

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