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Table 2 Urinary excretion of trimethylamine and trimethylamine N -oxide by the proband and family members under normal dietary conditions and after 300g marine fish meal

From: Fish odor syndrome (trimethylaminuria) supporting the possible FMO3 down expression in childhood: a case report

 

Normal dietary conditions

300g marine fish meal

 

TMA (mmol/mol Crn)

TMAO (mmol/mol Crn)

TMA/TMAO ratio

Amount of total TMA excreted as TMAO (%)

TMA (mmol/mol Crn)

TMAO (mmol/mol Crn)

TMA/TMAO ratio

Amount of total TMA excreted as TMAO (%)

Mother

104

5960

0.02

98.3

480

19140

0.02

97

Father

70

1820

0.04

96.3

640

14000

0.04

95.6

Proband

117

48

2.4

29.0

738

178

4.1

19.4

Brother1

20

600

0.03

97.0

225

5420

0.04

99.0

Brother2

35

910

0.04

96

320

12220

0.02

97.0

  1. Normal ratio: TMA/TMAO = 0.0025 to 0.055 (>85% TMAO).
  2. Affected ratio: TMA/TMAO >0.2 (<20% TMAO).
  3. Abbreviations: Crn creatine, TMA trimethylamine, TMAO trimethylamine N-oxide.