The amount of a glutamine amidotransferase-like class 1 domain-containing protein 3, mitochondrial when measured in blood. The trait is level of glutamine amidotransferase-like class 1 domain-containing protein 3, mitochondrial in blood (OBA_2051338). Also known as: blood glutamine amidotransferase-like class 1 domain-containing protein 3, mitochondrial amount.