Table 2 Stable Isotope cocktail of amino acids. The 8 ml mixture was diluted with saline.

L-Arginine:HCL [¹³C₆; ¹⁵N₄]

8.14

CNLM-539-H-PK

L-Citrulline [5-¹³C; 4,4,5,5-D₄]

1.67

CDLM-7139-MPT-PK

L-Glutamine [¹³C₅;¹⁵N₂]

7.71

CNLM-1275-H-PK

Glycine [¹³C₂]

19.47

CLM-1017-MPT-PK

L-Histidine:HCL:H₂O [< 5% D] [¹⁵N₃]

0.82

NLM-1513-PK

L-Leucine [¹³C₆]

4.59

CLM-2262-H-MPT-PK

L-Methionine [methyl-D₃]

1.77

DLM-431-MPT-PK

L-Methionine [1-¹³C]

1.8

CLM-3267–1

Tau-Methyl-L-histidine [Methyl-D₃]

0.35

DLM-2949-MPT-PK

trans-4-Hydroxy-L-proline [2,5,5-D₃]

0.75

DLM-9778-PK

L-Ornithine:HCL [¹³C₅]

1.04

CLM-4724-H-PK

L-Phenylalanine [Ring-¹³C₆]

9.64

CLM-1055-MPT-PK

L-Proline [¹³C₅; ¹⁵N]

1.82

CNLM-436-H-PK

L-Taurine [1,2-¹³C₂]

3.38

CLM-6622-PK

L-Tryptophan [Indole-D₅]

2.87

DLM-1092-MPT-PK

L-Tyrosine [Ring-D₄]

0.81

DLM-451-MPT-PK

L-Isoleucine [1-¹³C]

4.69

CLM-1026-PK

L-Valine [¹³C₅]

4

CLM-2249-H-PK

L-Lysine [¹³C₆-¹⁵N₂]

17.24

CNLM-291-H-PK

L-Threonine [¹³C₄; ¹⁵N]

2.26

CNLM-587-PK