The thoracic duct empties the chylomicrons into the bloodstream via the left subclavian vein.
From the en.wikipedia.org
This other vein, known as the subclavian vein, carries blood back from the arms toward the heart.
From the delawareonline.com
Then I had three catheters in my subclavian vein.
From the nytimes.com
The internal jugular vein passes behind the collarbone and unites with the subclavian vein to form the brachiocephalic vein, which is located in the upper chest.
From the delawareonline.com
From one direction it went into my right breast, under the collarbone and up, just under the skin, into my jugular, and then into my subclavian vein and toward my heart.
From the nytimes.com
Lymph is collected by a system of small lymphatic vessels and directed to the thoracic duct, which drains into the left subclavian vein where lymph rejoins the systemic blood circulation.