Validation of an LC-MS/MS Method for Urinary Lactulose and Mannitol Quantification: Results in Patients with Irritable Bowel Syndrome

Table 1

MS method parameters. The monitored precursor ion along with the corresponding product ion and collision energy (eV) and T-lens (V) are also shown.

Analyte	Precursor ion mass (m/z)	Production mass (m/z)	Transition	Collision energy (V)	T-lens (V)
Mannitol	181.0	89.1	Quantifier	21	34
	181.0	101.1	Qualifier	21	34
	181.0	119.2	Qualifier	21	34
	181.0	163.0	Qualifier	21	34
Lactulose	341.2	100.9	Qualifier	14	43
	341.2	160.9	Quantifier	14	43
Raffinose	503.1	220.7	IS	21	77