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Example of GC-MS total ion chromatogram (TIC) of plasma sample of HCC versus cirrhosis patient. A) HCC patient chromatogram demonstrating high peaks of decanoic acid (blue arrow), oleic acid (green arrow), and glycine (red arrow); B) Cirrhosis patient chromatogram demonstrating low peaks of glycine (red arrow) and oleic acid (green arrow), while decanoic acid was undetectable
