Final answer:
To administer 800 U of Heparin with a concentration of 1000 U/mL, a patient will receive 0.8 mL.
Step-by-step explanation:
To calculate how many mL a patient will receive from a prescription of Heparin, 800 U subcutaneously (SQ), with the given concentration of 1000 U/mL, we need to perform a unit conversion. The dose the patient needs to receive (800 U) is divided by the concentration of the Heparin available (1000 U/mL).
Calculation:
800 U รท 1000 U/mL = 0.8 mL
Therefore, the patient will receive 0.8 mL of Heparin.