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Table 1 Referral criteria of three NBS centers in Taiwan

From: Methylmalonic acidemia/propionic acidemia – the biochemical presentation and comparing the outcome between liver transplantation versus non-liver transplantation groups

 

CFOH borderline/positive

TIP borderline/positive

NTUH borderline/positive

C3 (μM)

6/14

6/12

4.74/8.8 (1st tier)

C3/C2

0.25/0.35

0.25/0.3

0.26

mma (μM)

4.2 (2nd tier)

Pos/Neg

1 (2nd tier)

  1. The first number indicates the cutoff point for resampling, whereas the second number stands for value of immediate referral to confirmatory medical center: NTUH/Taipei Veterans General Hospital. Note in CFOH and in NTUH, a second tier of mma level would be conducted in case of high C3 and/ or C3/C2 value.In TIP, a quantitative test of mma would be performed after detection of elevated C3 or C3/C2