Days Supply Calculation - Pharmacy Technician Certification Exam Ptce

1. Identify the days supply for 60 tablets with directions: take 2 tablets daily.

   $30\ \text{days}$. Divides the total quantity of 60 tablets by the daily dose of 2 tablets to find the supply duration.

2. State the formula for quantity to dispense when days supply and units per day are known.

   $\text{Quantity}=\text{Days supply}\times\text{Units per day}$. Multiplies the desired days supply by the fixed daily units to calculate the total quantity required.

3. Identify the days supply for 45 tablets with directions: take $\frac{1}{2}$ tablet daily.

   $90\ \text{days}$. Divides 45 tablets by the daily dose of $\frac{1}{2}$ tablet to find the supply duration.

4. Identify the days supply for 21 tablets with directions: take 1 tablet daily for 21 days, then stop for 7 days.

   $21\ \text{days}$. Provides enough tablets for the 21-day active dosing period before the 7-day break.

5. State the formula for days supply when dosing is a fixed number of units per day.

   $\text{Days supply}=\frac{\text{Quantity dispensed}}{\text{Units per day}}$. Divides the total quantity dispensed by the fixed daily units to determine the duration the supply will last.

6. Identify the days supply for 10 mL with directions: take 5 mL once daily.

   $2\ \text{days}$. Divides the 10 mL total by the 5 mL daily dose to calculate the duration.

7. Identify the days supply for 90 capsules with directions: take 1 capsule three times daily.

   $30\ \text{days}$. Divides the total quantity of 90 capsules by the daily intake of 3 capsules to determine the duration.

8. Identify the days supply for 30 grams of cream with directions: apply 1 gram twice daily.

   $15\ \text{days}$. Divides 30 grams by 2 grams daily, as twice daily application totals 2 grams per day.

9. Identify the days supply for 120 tablets with directions: take 1 tablet every 6 hours.

   $30\ \text{days}$. Divides 120 tablets by 4 daily doses, as every 6 hours equates to 4 times in 24 hours.

10. Identify the days supply for 60 tablets with directions: take 1 tablet daily as needed, maximum 2 tablets/day.

    $30\ \text{days}$. Uses maximum daily dose of 2 tablets to divide 60 tablets for conservative supply calculation.

11. Identify the days supply for 30 tablets with directions: take 1 tablet every other day.

    $60\ \text{days}$. Divides 30 tablets by 0.5 units per day, since every other day means half a tablet daily on average.

12. Identify the days supply for 150 mL with directions: take 10 mL twice daily.

    $7.5\ \text{days}$. Divides 150 mL by 20 mL daily, as twice daily dosing totals 20 mL per day.

13. Identify the days supply for 8 pens if each pen contains 300 units and dose is 20 units daily.

    $120\ \text{days}$. Divides total units from 8 pens (2400 units) by the 20 units daily dose.

14. Identify the days supply for 1 vial containing 1000 units if dose is 25 units daily.

    $40\ \text{days}$. Divides the vial's 1000 units by the 25 units daily dose to determine duration.

15. Identify the days supply for 1 inhaler labeled 200 actuations with directions: 2 puffs twice daily.

    $50\ \text{days}$. Divides 200 actuations by 4 daily puffs, as 2 puffs twice daily totals 4 per day.

16. Identify the days supply for 10 mL of eye drops if $1\ \text{mL}=20$ drops and dose is 1 drop $\text{OU}$ twice daily.

    $50\ \text{days}$. Divides total drops (200) by 4 daily drops, as 1 drop in each eye twice daily totals 4 drops.

17. Identify the quantity needed for 10 days with directions: take 15 mL once daily.

    $150\ \text{mL}$. Multiplies 10 days by the 15 mL daily dose to determine the total quantity required.

18. Identify the days supply for 15 mL of eye drops if 1 mL equals 20 drops and dose is 2 drops daily.

    $150\ \text{days}$. Divides total drops (300) by 2 daily drops, with 1 mL equaling 20 drops.

19. Identify the quantity needed for 14 days with directions: take 1 tablet twice daily.

    $28\ \text{tablets}$. Multiplies the 14 days by the daily requirement of 2 tablets to calculate the total quantity needed.

20. Identify the days supply for 100 tablets with directions: take 1 to 2 tablets daily.

    $50\ \text{days}$. Divides 100 tablets by the maximum daily dose of 2 tablets for as-needed variable dosing.

21. Identify the days supply for an inhaler with 120 actuations used as 2 puffs four times daily.

    $15\ \text{days}$. Divides 120 actuations by 8 daily puffs, since 2 puffs four times daily totals 8 per day.

22. Identify the days supply for 1 box of 30 patches with directions: apply 1 patch daily.

    $30\ \text{days}$. Divides the 30 patches by the daily application of 1 patch to find the supply duration.

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