1000 µg = 1 mg = 0.001 g

guava 500 g**
protein 5 g
protein quality 9 %
fat 3 g
linolenic acid 560 mg
carbs 290 g
vitamin E activity 4 mg
total carotenes 4 mg
vitamin B1 150 µg
vitamin B2 200 µg
vitamin B3 5 mg
vitamin B5 2 mg
vitamin B6 550 µg
folic acid 245 µg
vitamin C 1 g
vitamin K 13 µg
calcium 80 mg
magnesium 60 mg
iron 4 mg
zinc 3 mg
potassium 1 g
selenium 3 µg

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