Day Supply Calculations Flashcards
What are the 2 main uses of day supply calculations?
When billing insurance for a prescription and when determining when to refill a prescription.
What are the 2 types of day supply calculations?
Calculating a day supply from a given quantity (how long should a prescription last)
Calculating a quantity from a requested supply (how much medication to give a patient for it to last them a certain amount of time)
What is the basic day supply calculation from a quantity?
Day supply = Ammount dispensed / (Amount per dose X doses per day)
Further simplified: Day supply = amount dispensed / amount used per day
T/F: When determining the day supply of a PRN medication, you should use the most frequent dosing allowed on the prescription.
True
When calculating day supply for an inhaler what unit of measurement should you use?
Number of puffs dispensed
For eye drops what is the first step in calculating day supply?
Determine the total number of drops being dispensed. Multiply the bottle size in mL by the number of drops per mL.
How many drops/mL in a solution?
20 drops/mL
How many drops/mL in a suspension?
15 drops/mL
What should you consider when calculating day supply in a solution or suspension?
How many eyes/ears are being treated.
For insulins, what is the first step in determining day supply?
Determine the number of units being dispensed. Multiply the concentration of the insulin by the amount dispensed in mL.
Hydroxyzine 25mg -Tk 1 capsule PO TID#90
What is the day supply?
30
Ventolin Inhaler (200 puffs) –Inh 1-2 puffs PO Q4-6HRS PRN (Since this is a PRN medication, we will use the most frequent dosing allowed.)
What is the day supply?
16.7
Diclofenac 1% Gel –Apply up to 4 grams QID PRN | Dispense: #100gram tube
What is the day supply?
6.25
Latanoprost 0.005% Solution –Instill 1 GTT in OU QHS | Dispense: # 2.5mL
What is the day supply?
25
Insulin Aspart U-100 –Inj 10U SQ TID with meals | Dispense: #15mL
50
