peripheral blood

https://doi.org/10.1351/goldbook.09645

Blood obtained from parts of the body that are located at some distance from the heart.

Example: Blood drawn from the earlobe, fingertip, or heel pad.
Source:
PAC, 2018, 90, 1121. (Terminology of bioanalytical methods (IUPAC Recommendations 2018)) on page 1125 [Terms] [Paper]