Every 100 kcal of leg of lamb brings 14.8 g of protein. On that measure it ranks 50th of the 133 meats in this database and 144th of all 796 foods on the site. Measured by weight instead, its 28.3 g per 100 g ranks 44th in its group.
About 59% of the calories in leg of lamb come from protein, which makes it very protein-dense - close to the practical ceiling for a whole food. Foods in this band are the ones that let you raise your protein intake without raising your calorie intake much at all.
Weight for weight, leg of lamb has 3.7 g of protein for each gram of fat (28.3 g against 7.74 g per 100 g).
Set against beef liver, another meat entry in the database, a serving carries about 0.6 g less protein (beef liver has 24.7 g per 3 oz cooked).
It is a complete protein - it supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own. The serving quoted here is measured by weight at 85 g, and it covers about 48% of the 50 g FDA Daily Value for protein.
Serving sizes
Protein in common portions of leg of lamb
Protein and calories in Leg of lamb for 100 g, the site serving and USDA household portions.
Portion
Weight
Protein
Calories
100 g
100 g
28.3 g
191 kcal
3 oz cooked (serving used here)
85 g
24.1 g
162 kcal
1 piece, cooked, excluding refuse (yield from 1 lb raw meat with refuse)
218 g
61.7 g
416 kcal
Portion weights are the household measures listed on the USDA record; protein and calories scale from the per-100 g figures.
Amino acids
Essential amino acids in leg of lamb
The nine essential amino acids in Leg of lamb, per 100 g, per serving and per gram of protein.
Amino acid
Per 100 g
Per serving
mg per g protein
leucine
2.2 g
1.87 g
78
lysine
2.5 g
2.13 g
88
valine
1.53 g
1.3 g
54
isoleucine
1.36 g
1.16 g
48
threonine
1.21 g
1.03 g
43
phenylalanine
1.15 g
0.98 g
41
methionine
0.726 g
0.62 g
26
histidine
0.896 g
0.76 g
32
tryptophan
0.331 g
0.28 g
12
Per-100 g values are the amino acid analysis on the USDA record. The serving and per-gram-of-protein columns are arithmetic on those values; they are not a protein quality score.
SampleWhat goal trends look like after a week
109 g
Average per logged day
4 of 7
Days goal met
71%
Complete-protein share
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Sample figures for one made-up week against a 110 g goal, not your data. Red bars met the goal. Your own log fills this in with Premium.
28.3 g. The 3 oz cooked serving used on this page weighs 85 g and so carries 24.1 g.
How much protein do you get per 100 calories of leg of lamb?
14.8 g. That figure divides its 28.3 g of protein per 100 g by its 191 kcal per 100 g, so it does not depend on serving size.
Is the protein in leg of lamb complete?
Yes. The protein in leg of lamb supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own.
What share of the protein Daily Value is one serving of leg of lamb?
About 48%. One 3 oz cooked serving has 24.1 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #174314 (Lamb, leg, whole (shank and sirloin), separable lean only, trimmed to 1/4" fat, choice, cooked, roasted), SR Legacy data. USDA data is in the public domain. Values are the published reference figures for that record, not lab measurements for a specific brand or batch.