Table 3.

HPLC-TOF MS Analysis of Two Commercial Cyclocreatine-Related Dietary Supplements

	Vendor 1 product		Vendor 2 product
compound	integrated area (IA)	ratioa (%)	integrated area (IA)	ratioa (%)
cyclocreatine	N/Ab	N/A	N/Ab	N/A
trimethylglycine	1.89 × 108	45.8	6.33 × 106	4.2
creatine	4.33 × 107	10.5	3.74 × 107	24.8
taurine	1.68 × 107	4.1	4.10 × 104	0.02
glycocyamine	1.64 × 107	4.0	1.77 × 104	0.01
creatinine	1.47 × 108	35.6	1.07 × 108	70.97

^aRelative quantification using integrated peak area of extracted ion chromatogram (EIC) from LC-MS regardless of ionization efficiency.

^bCompound not detected within sample.