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Table 1 Results of MS/MS for twin siblings

From: Propionic acidemia identified in twin siblings conceived by in vitro fertilization (IVF) with parents who were unknown carriers of a PCCA mutation

Case

MS/MS (blood)

C0 (10–50 μmol/L)

C3 (0–3.1 μmol/L)

C3/C2 (0.02–0.25)

C3/C0 (0.01–0.24)

Girl

6.819

14.581

2.871

2.138

Boy

8.377

18.994

2.261

2.267

  1. MS/MS, tandem mass spectrometry