1000 µg = 1 mg = 0.001 g

herring 100 g**
protein 18 g
protein quality 45 %
fat 18 g
LNA (omega 3) 63 mg
EPA (omega 3) 2 g
DPA (omega 3) 108 mg
DHA (omega 3) 677 mg
good cholesterol 44 mg
vitamin E activity 2 mg
vitamin A 10 µg
vitamin D 8 µg
vitamin B1 55 µg
vitamin B2 244 µg
vitamin B3 4 mg
vitamin B5 645 µg
vitamin B6 302 µg
folic acid 10 µg
vitamin B12 11 µg
vitamin K 100 µg
calcium 60 mg
phosphorus 240 mg
potassium 370 mg
sodium 74 mg
iron 1 mg
zinc 1 mg
manganese 19 µg
copper 10 µg
nickel 11 µg
aluminium 9 µg
iodide 50 µg
selenium 37 µg

** Souci, Fachmann, Kraut;
Food Composition And Nutrition Tables
Medpharm Scientific Publishers Stuttgart