<p>The apparent clearance of intravenous or subcutaneous morphine is 1600 mL/min.<sup class="text-reference-group"><a class="reference-popover-link" data-content="Stuart-Harris R, Joel SP, McDonald P, Currow D, Slevin ML: The pharmacokinetics of morphine and morphine glucuronide metabolites after subcutaneous bolus injection and subcutaneous infusion of morphine. Br J Clin Pharmacol. 2000 Mar;49(3):207-14. (PubMed ID 10718775)" href="#reference-A176164">8</a></sup></p>