Transportation in Serum

Independent of supplementation, baseline octopamine levels in serum have been noted to be in the low nanomolar range including 4.28+/-0.28ng/mL in otherwise healthy aged (60) controls.It can be found in platelets in concentrations paralleling adrenaline and noradrenaline.
Following supplementation of 8mg p-octopamine, the halflife appears to be biexponential at 76 and 175 minutes, thought to possibly be explained by conjugates being hydrolyzed back into free p-octopamine.