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Table 1 TMA amounts found in some sushi and squid samples

From: Screening freshness of seafood by measuring trimethylamine (TMA) levels using helium-plasma ionization mass spectrometry (HePI-MS)

SampleAverage amount (μg/g)
Squid sample (0.8 g)17.2
A piece of salmon recovered from a sushi sample (0.8 g)~ 0.24a
A piece of shrimp recovered from a sushi sample (0.8 g)~ 0.16a
  1. aAmounts estimated by extrapolating the calibration curve