Table 5 Ultra-high performance liquid chromatography mass spectrometer gradient elution mobile phase program settings.

From: Diagnosis of deep vein thrombosis from γ-butylbetaine and l-carnitine in plasma and urine based on untargeted and targeted metabolomics

 

Time

Flow

A. Conc

B. Conc

1

0

0.4

35.0

65.0

2

1.5

0.4

35.0

65.0

3

1.6

0.4

35.0

50.0

4

3.8

0.4

35.0

50.0

5

3.9

0.4

35.0

65.0

6

5.0

0.4

35.0

65.0

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