Number of metabolites that were measured with each protocol according to chemical class
| Protocol | Total | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Analyte class | |||||||||
| Total | 630 | 131 | 251 | 100 | 149 | 132 | 303 | 342 | 137 |
| Alkaloids | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Amine oxides | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Amino acids | 20 | 20 | 19 | 19 | 19 | 19 | 20 | 20 | 19 |
| Amino acid related | 30 | 25 | 22 | 23 | 23 | 22 | 26 | 25 | 23 |
| Bile acids | 14 | 11 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
| Biogenic amines | 9 | 8 | 6 | 6 | 6 | 6 | 7 | 7 | 6 |
| Carbohydrates and related | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| Carboxylic acids | 7 | 4 | 2 | 3 | 2 | 2 | 3 | 4 | 2 |
| Cresols | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Fatty acids | 12 | 3 | 9 | 7 | 9 | 7 | 10 | 10 | 7 |
| Hormones and related | 4 | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 2 |
| Indoles and derivatives | 4 | 4 | 3 | 4 | 4 | 2 | 4 | 3 | 4 |
| Nucleobases and related | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Vitamins and cofactors | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Acylcarnitines | 40 | 6 | 2 | 2 | 2 | 2 | 4 | 6 | 2 |
| Glycerophospholipide (lysophasphatidylcholines and phosphatidylcholines) | 90 | 5 | 25 | 7 | 18 | 10 | 27 | 38 | 10 |
| Sphingomyelins | 15 | 3 | 5 | 1 | 3 | 3 | 6 | 7 | 3 |
| Cholesteryl esters | 22 | 3 | 3 | 0 | 0 | 0 | 4 | 6 | 0 |
| Ceramides | 28 | 0 | 22 | 0 | 15 | 10 | 24 | 26 | 6 |
| Dihydroceramides | 8 | 0 | 2 | 0 | 0 | 0 | 1 | 2 | 0 |
| Glycosylceramides (monohexosylceramides, dihexosylceramides, and Trihexosylceramides) | 34 | 1 | 17 | 0 | 7 | 7 | 24 | 22 | 4 |
| Diglycerides | 44 | 6 | 14 | 4 | 11 | 5 | 17 | 18 | 4 |
| Triglycerides | 242 | 25 | 79 | 3 | 9 | 17 | 104 | 127 | 26 |
| Metabolism indicators | 232 | 66 | 72 | 85 | 78 | 86 | 99 | 96 | 84 |