Table 1.

Concentrations of 19 urinary metabolites given in mmol/mol creatinine

Metabolite	Mean	Q2.5	Q25	Median	Q75	Q97.5	Max
Acetic acid	120	−/−	−/−	−/−	40	1,200	7,300
Alanine	120	−/−	60	90	160	330	1,900
Betaine	430	−/−	220	390	600	1,100	4,300
Citric acid	440	−/−	160	360	600	1,300	5,100
Creatine	140	−/−	−/−	40	190	700	1,800
Dimethylamine	100	30	70	110	130	160	210
Formic acid	160	−/−	30	80	200	740	1,600
Fumaric acid	12	−/−	−/−	10	20	50	100
Glycine	650	−/−	230	490	960	1,900	6,900
Lactic acid	90	−/−	−/−	40	80	540	5,000
d-Lactose	230	−/−	−/−	190	270	670	19,000
α-d-Galactose	110	−/−	−/−	50	150	500	1,200
β-d-Glucose	250	−/−	60	100	130	380	83,000
1-Methylnicotinamide	60	−/−	−/−	50	70	150	370
Myo-inositol	490	−/−	170	360	640	1,600	6,700
N,N-Dimethylglycine	80	−/−	30	60	90	270	950
Succinic acid	110	−/−	40	70	130	440	1,700
Trimethylamine	50	−/−	20	40	60	170	590
Taurine	410	−/−	150	310	540	1,200	12,000

The parameters Mean and Median assign the concentration mean and median values of the metabolites. Q2.5, Q25, Q75, and Q97.5 represent the respective quantiles (2.5%, 25%, 75%, 97.5%) of the concentration distributions. Because of detection thresholds, Q2.5 and Q25 could not always be determined. Related values are marked as ‘−/−’. Another consequence was that mean values could only be approximated roughly for orientation