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Table 2 Multiple reaction monitoring transitions for ion mass > ion product of fragmentation for urine 6-hydroxymelatoninsulfate and the organic acids

From: Reliability of a dried urine test for comprehensive assessment of urine hormones and metabolites

Analyte

Transition

6-Hydroxymelatoninsulfate

372.5 > 176.2

d4-6-Hydroxymelatoninsulfate

331.5 > 179.2

Homovanillic acid (HVA)

183.0 > 137.0

d2-Homovanillic acid (d2-HVA)

185.0 > 139.0

Vanillylmandelic acid (VMA)

197.0 > 138.0

d3-Vanillylmandelic acid (d3-VMA)

199.8 > 140.9

Kynurenic acid

190.0 > 144.0

d5-Kynurenic acid

192.0 > 149.0

Xanthurenic acid

206.0 > 160.0

d3-Xanthurenic acid

210.0 > 164.0

Methylmalonic acid (MMA)

117.0 > 73.0

d2-Methylmalonic acid (d2-MMA)

120.0 > 76.0

Pyroglutamic acid

130.0 > 84.0

d5-Pyroglutamic acid

135.0 > 89.0

5-Hydroxyindoleacetic acid (5-HIAA)

192.0 > 146.0