Calculations

Question 1

standard units in veterinary practice?

Answer 1

kg
mg
ml

Question 2

convert down in weight/volume?

Answer 2

multiply by 1000

5g = 5 x 1000 = 5000mg

Question 3

convert up in weight/volume?

Answer 3

divided by 1000

50ml = 50 % 1000 = 0.05L

Question 4

convert percentage solutions?

Answer 4

x 10

20% solution = 20 x 10 = 200 mg/ml

Question 5

dose required formula?

Answer 5

concentration of drug (mg/ml or mg)

Question 6

tablet calculations?

Answer 6

concentration

round to closest half or whole

Question 7

calculate tablet courses?

Answer 7

use standard formula to calculate dose required

calculate number of tablets required per day

• SID = one a day
• BID = two a day
• TID = three a day
• QID = four a day

calculate number of tablets required for course

Question 8

reconstitution calculation?

Answer 8

mg of powder divided by ml of solvent

eg a 600mg vial of powder requires reconstitution with 6ml of sterile water
- 600mg / 6ml = 100mg/ml