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Amino Acid Profile - Actual vs Label

Below are 3 examples of protein powders that are NOT what their label says they are. Each of these product labels lists a “typical amino acid profile.” The typical amino acid profile is calculated based on the amount of whey protein per serving. Independent analysis revealed substantial differences between actual composition and the typical composition listed on the label.



Some product labels list a “Typical Amino Acid Profile”. This is a hypothetical amino acid composition calculation based on the amount of whey protein claimed in each serving.



Independent analysis produced the Actual amino acid composition of each product tested.



The variance shown in the table reflects the difference between what the product label claims and what independent analysis confirms each product’s amino acid composition to be.

Product #1 – Professional Whey Protein Powder


AMINO ACIDS

"TYPICAL" Amino Acid Profile found on label (mg per 60g) ACTUAL (mg per 60g) by analysis* Variance
Branch chain aminoacid; BCAA
Isoleucine 1330 1182 -11%
Leucine 2240 2051 -8%
Valine 1206 1218 -1%
 
Communication, detox, energy and neurochemicals
Alanine 999 655 -34%
Asparagine/Aspartate   813  
Arginine 461 480 4%
Cysteine/Cystine 482 507 5%
Glutamine/Glutamate 3804 4405 16%
Glycine 391 333 -15%
Methionine 420 201 -52%
Phenylalanine   606 588 -3%
Serine 999 481 -52%
Threonine 1412 776 -45%
Tyrosine 606 551 -9%
 
Specialized functions
Histidine 296 210 -29%
Lysine 1826 787 -57%
Proline 1226 1760 44%



Product #2 – Professional Whey Protein Powder


AMINO ACIDS

"TYPICAL" Amino Acid Profile found on label (mg per 30g) ACTUAL (mg per 30g) by analysis* Variance
Branch chain aminoacid; BCAA
Isoleucine 1300 678 -48%
Leucine 2100 1325 -37%
Valine 1100 1333 21%
 
Communication, detox, energy and neurochemicals
Alanine 1200 681 -43%
Asparagine/Aspartate   383  
Arginine 500 187 -63%
Cysteine/Cystine   700 604 -14%
Glutamine/Glutamate 4500 2493 -45%
Glycine 700 265 -62%
Methionine 500 122 -76%
Phenylalanine   800 313 -61%
Serine   1300 522 -60%
Threonine   1900 403 -79%
Tyrosine   800 434 -46%
 
Specialized functions
Histidine   500 109 -78%
Lysine 2400 409 -83%
Proline 1600 1293 -19%



Product #3 – Retail Whey Protein Powder


AMINO ACIDS

"TYPICAL" Amino Acid Profile found on label (mg per 31g) ACTUAL (mg per 30g) by analysis* Variance
Branch chain aminoacid; BCAA
Isoleucine 1573 221 -86%
Leucine 2531 368 -85%
Valine 1422 339 -76%
 
Communication, detox, energy and neurochemicals
Alanine   1180 115 -90%
Asparagine/Aspartate 2508 206 -92%
Arginine 505 25 -95%
Cysteine/Cystine   494 100 -80%
Glutamine/Glutamate   4082 778 -81%
Glycine   412 46 -89%
Methionine 492 106 -78%
Phenylalanine 748 95 -87%
Serine 1126 113 -90%
Threonine   1654 164 -90%
Tyrosine   703 106 -85%
 
Specialized functions
Histidine 423 44 -90%
Lysine 2233 167 -93%
Proline   1509 364 -76%



* Analysis by H. Stone (BUMC) April 2010. Data on File