Final answer:
The total volume administered after diluting levothyroxine 1.5 mL IVP with 5 mL of normal saline (NS) is 6.5 mL.
Step-by-step explanation:
To properly dilute levothyroxine 1.5 mL IVP, you need to dilute it with 5 mL of normal saline (NS). The total volume of the diluted medication will be the sum of the original volume and the diluent volume. So, the total volume administered after proper dilution will be 1.5 mL + 5 mL = 6.5 mL.