Stability of levothyroxine sodium 0.4 microg/mL in 0.9% sodium chloride injection.

Context: Intravenous levothyroxine therapy decreases vasopressor requirements and prevents cardiovascular collapse in hemodynamically unstable patients eligible for organ donation. The stability of levothyroxine when used in this manner is unknown.

Objective: To determine the stability of levothyroxine solution for intravenous use at a concentration of 0.