Question

A TPN order is to contain 1 mg of folic acid per 1000 cc of TPN. If the stock vial of folic acid contains 5 mg/ml, what volume would be required to prepare 3000 ml of TPN?

Answer 1

In this calculation, to find the volume of folic acid required to prepare 3000 ml of TPN?

recall, 1 mg of folic acid per 1000cc of TCN,

Then, x mg of folic acid per 3000 cc = 3mg

Similarly, For 5mg of folic acid per 1 ml of TCN

Then, 3mg of folic acid per y ml of TCN = 0.6ml

0.6ml of folic acid would be required to prepare 3000 ml of TPN

Answer 2

0.6 ml

Step-by-step explanation:

let x = the mg needed for 3000 ml

`(1mg)/(1000 ml)` =
`(xmg)/(3000ml)`

x =
`(3000mg)/(1000)`

x = 3 mg

`(3mg)/(y)` =
`(5mg)/(1ml)` where y = the volume of the vial needed for 3000 ml of TPN

y =
`(3ml)/(5)`

y = 0.6 ml