dietary and bodybuilding supplements that supply extra protein.
Although they are not supposed recorded measurable amounts of free-form amino acids, which spike protein content in standard laboratory tests but add little nutritional benefit (beyond physiologically appropriate proportions). Asparagine was the most commonly spiked amino acid (15/74 products), followed by alanine (11/74), glycine (8/74), taurine (8/74), and leucine (7/74). Histidine, glutamine, alanine, cysteine, and taurine were the highest-risk amino acids, recording the most severe spikes in our batch analysis, respectively.
Although they are not supposed recorded measurable amounts of free-form amino acids, which spike protein content in standard laboratory tests but add little nutritional benefit (beyond physiologically appropriate proportions). Asparagine was the most commonly spiked amino acid (15/74 products), followed by alanine (11/74), glycine (8/74), taurine (8/74), and leucine (7/74). Histidine, glutamine, alanine, cysteine, and taurine were the highest-risk amino acids, recording the most severe spikes in our batch analysis, respectively.
Top protein supplements according to Labdoor (1095 analytical chemistry and molecular biology assays on 74 best-selling protein supplements)
01 Myprotein Impact Whey Isolate A
02 Integrated Supplements Whey Isolate Protein A
03 Myprotein Impact Whey Protein A
04 NOW Foods Whey Protein Isolate A
05 Jay Robb's Whey Protein A
06 Garden of Life Raw Protein A
07 Spiru-Tein A
08 Sunwarrior Warrior Blend Raw Vegan Protein A
09 Vega Sports Performance Protein A
10 MRM 100% All Natural Whey A
11 Allmax Nutrition IsoNatural Whey Protein Isolate A
12 Bulletproof Whey Protein A
13 Nature's Best Zero Carb Isopure A-
14 Optimum Gold Standard Natural 100% Whey A-
15 Dymatize ISO-100 A-
16 Six Star Pro Nutrition Elite Series Whey Isolate Plus A-
17 Pure Protein 100% Natural Whey Protein A-
18 MusclePharm Casein A-
19 Body Fortress Super Advanced Whey Isolate A-
20 Quest Nutrition Protein Powder A-
21 Optimum Gold Standard 100% Casein A-
22 Shakeology A-
23 Optimum Pro Complex A-
24 MET-Rx Protein Plus A-
25 Progenex More Muscle A-
26 Cellucor COR-Performance Whey A-
27 BioTrust Low Carb Protein Powder A-
28 Optimum Gold Standard 100% Whey A-
29 Optimum Platinum Hydro Whey B+
30 MusclePharm MuscleGel Shot B+
31 Vitamin Shoppe BodyTech Whey Tech Pro 24 B+
32 GNC Pro Performance AMP Amplified Wheybolic Extreme 60 B+
33 EAS 100% Whey Protein B+
34 Dymatize Elite Whey Protein Isolate B+
35 GNC Pro Performance AMP Amplified 100% Whey Protein B
36 MusclePharm Arnold Schwarzenegger Series Iron Whey Protein B
37 MusclePharm Combat Powder B
38 Herbalife 24 Rebuild Strength B
39 Body Fortress Super Advanced Whey Protein Powder B
40 Six Star Pro Nutrition Elite Series Whey Protein B
41 CytoSport Muscle Milk Naturals B
42 Gaspari Nutrition MyoFusion Elite Protein Series B
43 CytoSport Monster Milk B
44 GNC Pro Performance 100% Casein B
45 MuscleTech NITRO-TECH B
46 Twinlab 100% Whey Protein Fuel B-
47 BSN Syntha-6 Isolate B-
48 CytoSport Muscle Milk B-
49 CVS Protein Powder B-
50 Gaspari Nutrition MyoFusion Probiotic Series B-
51 Pro Jym Protein B-
52 MuscleTech Phase8 B-
53 Pure Protein Whey Protein C+
54 CytoSport Cyto Gainer C-
55 American Pure Whey 100% Whey Protein Isolate C-
56 BSN Syntha-6 D+
57 Giant Sports Delicious Protein D+
58 Ensure High Protein D+
59 SlimFast RTD D+
60 MHP Up Your Mass D
61 Nature's Best Zero Carb Isopure Drink D
62 Pure Protein RTD Shake D
63 Universal Nutrition Real Gains D
64 EAS AdvantEdge Carb Control RTD D
65 4 Dimension Nutrition Whey Phase D
66 CytoSport Whey Isolate Protein Drink D
67 GNC Total Lean Lean Shake D
68 Optimum Serious Mass D
69 EAS Myoplex Original RTD D-
70 GNC Pro Performance AMP Amplified Mass XXX F
71 CytoSport Monster Milk RTD F
72 BSN Syntha-6 RTD F
73 CytoSport Muscle Milk RTD F
74 BSN True-Mass F
01 Myprotein Impact Whey Isolate A
02 Myprotein Impact Whey Protein A
03 MRM 100% All Natural Whey A
04 Pure Protein 100% Natural Whey Protein A-
05 Garden of Life Raw Protein A
06 Optimum Gold Standard Natural 100% Whey A-
07 Body Fortress Super Advanced Whey Isolate A-
08 Spiru-Tein A
09 Sunwarrior Warrior Blend Raw Vegan Protein A
10 Vitamin Shoppe BodyTech Whey Tech Pro 24 B+
• • •
11 MusclePharm Casein A-
12 Integrated Supplements Whey Isolate Protein A
13 Dymatize ISO-100 A-
14 Dymatize Elite Whey Protein Isolate B+
15 Optimum Gold Standard 100% Whey A-
16 MusclePharm Combat Powder B
17 Six Star Pro Nutrition Elite Series Whey Isolate Plus A-
18 CytoSport Muscle Milk Naturals B
19 Optimum Gold Standard 100% Casein A-
20 Allmax Nutrition IsoNatural Whey Protein Isolate A
21 EAS 100% Whey Protein B+
22 Jay Robb's Whey Protein A
23 Body Fortress Super Advanced Whey Protein Powder B
24 Cellucor COR-Performance Whey A-
25 CytoSport Muscle Milk B-
26 NOW Foods Whey Protein Isolate A
27 Quest Nutrition Protein Powder A-
28 Bulletproof Whey Protein A
29 American Pure Whey 100% Whey Protein Isolate C-
30 Nature's Best Zero Carb Isopure A-
31 Six Star Pro Nutrition Elite Series Whey Protein B
32 MusclePharm Arnold Schwarzenegger Series Iron Whey Protein B
33 Twinlab 100% Whey Protein Fuel B-
34 CVS Protein Powder B-
35 Vega Sports Performance Protein A
36 Gaspari Nutrition MyoFusion Elite Protein Series B
37 Pure Protein Whey Protein C+
38 MET-Rx Protein Plus A-
39 Gaspari Nutrition MyoFusion Probiotic Series B-
40 Optimum Platinum Hydro Whey B+
41 Optimum Pro Complex A-
42 BSN Syntha-6 D+
43 GNC Pro Performance AMP Amplified 100% Whey Protein B
44 Progenex More Muscle A-
45 MuscleTech NITRO-TECH B
46 MusclePharm MuscleGel Shot B+
47 MuscleTech Phase8 B-
48 BSN Syntha-6 Isolate B-
49 CytoSport Cyto Gainer C-
50 Pro Jym Protein B-
51 SlimFast RTD D+
52 Shakeology A-
53 BioTrust Low Carb Protein Powder A-
54 Giant Sports Delicious Protein D+
55 4 Dimension Nutrition Whey Phase D
56 CytoSport Monster Milk B
57 GNC Pro Performance 100% Casein B
58 GNC Pro Performance AMP Amplified Wheybolic Extreme 60 B+
59 MHP Up Your Mass D
60 Herbalife 24 Rebuild Strength B
61 EAS AdvantEdge Carb Control RTD D
62 Universal Nutrition Real Gains D
63 Ensure High Protein D+
64 GNC Total Lean Lean Shake D
65 Nature's Best Zero Carb Isopure Drink D
66 CytoSport Whey Isolate Protein Drink D
67 Pure Protein RTD Shake D
68 Optimum Serious Mass D
69 BSN True-Mass F
70 CytoSport Muscle Milk RTD F
71 BSN Syntha-6 RTD F
72 EAS Myoplex Original RTD D-
73 CytoSport Monster Milk RTD F
74 GNC Pro Performance AMP Amplified Mass XXX F
01 Myprotein Impact Whey Isolate A
02 Integrated Supplements Whey Isolate Protein A
03 Myprotein Impact Whey Protein A
04 NOW Foods Whey Protein Isolate A
05 Jay Robb's Whey Protein A
06 Garden of Life Raw Protein A
07 Spiru-Tein A
08 Sunwarrior Warrior Blend Raw Vegan Protein A
09 Vega Sports Performance Protein A
10 MRM 100% All Natural Whey A
11 Allmax Nutrition IsoNatural Whey Protein Isolate A
12 Bulletproof Whey Protein A
13 Nature's Best Zero Carb Isopure A-
14 Optimum Gold Standard Natural 100% Whey A-
15 Dymatize ISO-100 A-
16 Six Star Pro Nutrition Elite Series Whey Isolate Plus A-
17 Pure Protein 100% Natural Whey Protein A-
18 MusclePharm Casein A-
19 Body Fortress Super Advanced Whey Isolate A-
20 Quest Nutrition Protein Powder A-
21 Optimum Gold Standard 100% Casein A-
22 Shakeology A-
23 Optimum Pro Complex A-
24 MET-Rx Protein Plus A-
25 Progenex More Muscle A-
26 Cellucor COR-Performance Whey A-
27 BioTrust Low Carb Protein Powder A-
28 Optimum Gold Standard 100% Whey A-
29 Optimum Platinum Hydro Whey B+
30 MusclePharm MuscleGel Shot B+
31 Vitamin Shoppe BodyTech Whey Tech Pro 24 B+
32 GNC Pro Performance AMP Amplified Wheybolic Extreme 60 B+
33 EAS 100% Whey Protein B+
34 Dymatize Elite Whey Protein Isolate B+
35 GNC Pro Performance AMP Amplified 100% Whey Protein B
36 MusclePharm Arnold Schwarzenegger Series Iron Whey Protein B
37 MusclePharm Combat Powder B
38 Herbalife 24 Rebuild Strength B
39 Body Fortress Super Advanced Whey Protein Powder B
40 Six Star Pro Nutrition Elite Series Whey Protein B
41 CytoSport Muscle Milk Naturals B
42 Gaspari Nutrition MyoFusion Elite Protein Series B
43 CytoSport Monster Milk B
44 GNC Pro Performance 100% Casein B
45 MuscleTech NITRO-TECH B
46 Twinlab 100% Whey Protein Fuel B-
47 BSN Syntha-6 Isolate B-
48 CytoSport Muscle Milk B-
49 CVS Protein Powder B-
50 Gaspari Nutrition MyoFusion Probiotic Series B-
51 Pro Jym Protein B-
52 MuscleTech Phase8 B-
53 Pure Protein Whey Protein C+
54 CytoSport Cyto Gainer C-
55 American Pure Whey 100% Whey Protein Isolate C-
56 BSN Syntha-6 D+
57 Giant Sports Delicious Protein D+
58 Ensure High Protein D+
59 SlimFast RTD D+
60 MHP Up Your Mass D
61 Nature's Best Zero Carb Isopure Drink D
62 Pure Protein RTD Shake D
63 Universal Nutrition Real Gains D
64 EAS AdvantEdge Carb Control RTD D
65 4 Dimension Nutrition Whey Phase D
66 CytoSport Whey Isolate Protein Drink D
67 GNC Total Lean Lean Shake D
68 Optimum Serious Mass D
69 EAS Myoplex Original RTD D-
70 GNC Pro Performance AMP Amplified Mass XXX F
71 CytoSport Monster Milk RTD F
72 BSN Syntha-6 RTD F
73 CytoSport Muscle Milk RTD F
74 BSN True-Mass F
01 Myprotein Impact Whey Isolate A
02 Myprotein Impact Whey Protein A
03 MRM 100% All Natural Whey A
04 Pure Protein 100% Natural Whey Protein A-
05 Garden of Life Raw Protein A
06 Optimum Gold Standard Natural 100% Whey A-
07 Body Fortress Super Advanced Whey Isolate A-
08 Spiru-Tein A
09 Sunwarrior Warrior Blend Raw Vegan Protein A
10 Vitamin Shoppe BodyTech Whey Tech Pro 24 B+
• • •
11 MusclePharm Casein A-
12 Integrated Supplements Whey Isolate Protein A
13 Dymatize ISO-100 A-
14 Dymatize Elite Whey Protein Isolate B+
15 Optimum Gold Standard 100% Whey A-
16 MusclePharm Combat Powder B
17 Six Star Pro Nutrition Elite Series Whey Isolate Plus A-
18 CytoSport Muscle Milk Naturals B
19 Optimum Gold Standard 100% Casein A-
20 Allmax Nutrition IsoNatural Whey Protein Isolate A
21 EAS 100% Whey Protein B+
22 Jay Robb's Whey Protein A
23 Body Fortress Super Advanced Whey Protein Powder B
24 Cellucor COR-Performance Whey A-
25 CytoSport Muscle Milk B-
26 NOW Foods Whey Protein Isolate A
27 Quest Nutrition Protein Powder A-
28 Bulletproof Whey Protein A
29 American Pure Whey 100% Whey Protein Isolate C-
30 Nature's Best Zero Carb Isopure A-
31 Six Star Pro Nutrition Elite Series Whey Protein B
32 MusclePharm Arnold Schwarzenegger Series Iron Whey Protein B
33 Twinlab 100% Whey Protein Fuel B-
34 CVS Protein Powder B-
35 Vega Sports Performance Protein A
36 Gaspari Nutrition MyoFusion Elite Protein Series B
37 Pure Protein Whey Protein C+
38 MET-Rx Protein Plus A-
39 Gaspari Nutrition MyoFusion Probiotic Series B-
40 Optimum Platinum Hydro Whey B+
41 Optimum Pro Complex A-
42 BSN Syntha-6 D+
43 GNC Pro Performance AMP Amplified 100% Whey Protein B
44 Progenex More Muscle A-
45 MuscleTech NITRO-TECH B
46 MusclePharm MuscleGel Shot B+
47 MuscleTech Phase8 B-
48 BSN Syntha-6 Isolate B-
49 CytoSport Cyto Gainer C-
50 Pro Jym Protein B-
51 SlimFast RTD D+
52 Shakeology A-
53 BioTrust Low Carb Protein Powder A-
54 Giant Sports Delicious Protein D+
55 4 Dimension Nutrition Whey Phase D
56 CytoSport Monster Milk B
57 GNC Pro Performance 100% Casein B
58 GNC Pro Performance AMP Amplified Wheybolic Extreme 60 B+
59 MHP Up Your Mass D
60 Herbalife 24 Rebuild Strength B
61 EAS AdvantEdge Carb Control RTD D
62 Universal Nutrition Real Gains D
63 Ensure High Protein D+
64 GNC Total Lean Lean Shake D
65 Nature's Best Zero Carb Isopure Drink D
66 CytoSport Whey Isolate Protein Drink D
67 Pure Protein RTD Shake D
68 Optimum Serious Mass D
69 BSN True-Mass F
70 CytoSport Muscle Milk RTD F
71 BSN Syntha-6 RTD F
72 EAS Myoplex Original RTD D-
73 CytoSport Monster Milk RTD F
74 GNC Pro Performance AMP Amplified Mass XXX F
