Heavy metal Range (ppb) Mean concentration in tilapia samples (ppb) #Action Level in Seafood (ppb)1 Arsenic 0-55.85 2.88 76,000-86,000 Lead 0-4.5 1.16 1500-1700 Cadmium 0-85.28 10.89 3000-4000 Mercury 0-156.8 17.48 1000 #Action levels in seafood set forth by US-FDA.

Table 2: Range, mean concentration and action levels for heavy metal concentrations in seafood.