TABLE 2.

Estimates of additive variance (${\mathrm{\sigma }}_a^2$), residual variance (${\mathrm{\sigma }}_e^2$), heritability (h²) and their standard error (SE) for 11 plasma metabolites^a.

Trait	${\mathrm{\sigma }}_a^2$	${\mathrm{\sigma }}_e^2$	h2	SE
Choline	6,598.90	11,545.80	0.36	0.15
Creatinine	1,051.67	1,947.73	0.35	0.17
Betaine	402.10	783.09	0.34	0.16
Pyruvic acid	1,027.32	2,007.84	0.34	0.24
L-Lactic acid	639,240	2,268,490	0.22	0.16
Citric acid	477.13	1,719.37	0.22	0.15
Creatine	160.55	843.99	0.16	0.15
D-Glucose	17,497.10	100,579.00	0.15	0.14
Acetone	29.39	185.01	0.14	0.21
L-Alanine	768.05	7,824.22	0.09	0.13
Succinic acid	78.47	838.28	0.09	0.15

^aMetabolites with zero or near zero heritability estimates were not listed.