Table 1.

Concentration of dopamine throughout the periphery

Tissue/organ	Concentration
Central nervous system	1.5 nM~0.1 mM
Carotid body (human infant)	1.3 mM
Lung	0.7 µM
Heart	0.93~3 µM
Plasma	65 pM~35 nM
Spleen (primates)	0.17 µM
Pancreas (primate)	0.22 µM
Stomach	40 nM
Small intestine (rat)	32 nM
Colon	0.14 µM

Data based on [9]