Value Per Nutrient Food 0.27 g 100 grams Cystine Lamb, variety meats and by-products, liver, cooked, pan-fried 0.27 g 100 grams Cystine Beef, round, bottom round, steak, separable lean and fat, trimmed to 1/8" fat, all grades, raw 0.27 g 100 grams Cystine Fish, sunfish, pumpkin seed, cooked, dry heat 0.27 g 100 grams Cystine Lamb, Australian, imported, fresh, rib, separable lean and fat, trimmed to 1/8" fat, cooked, roasted 0.27 g 100 grams Cystine Beef, top sirloin, steak, separable lean and fat, trimmed to 1/8" fat, select, raw 0.27 g 100 grams Cystine Beef, round, bottom round, steak, separable lean and fat, trimmed to 1/8" fat, choice, raw 0.27 g 100 grams Cystine Beef, chuck, shoulder clod, shoulder top and center steaks, separable lean and fat, trimmed to 0" fat, all grades, raw 0.27 g 100 grams Cystine Fish, trout, rainbow, farmed, cooked, dry heat