calculation problem help pls

[batki610]

A prescription calls for 40 mcg/ml of Leukine in 0.9% NaCl. How many mL of Leukine 500 mcg/mL should be diluted with 250 mL of NS?

any idea how to solve this? thank you

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[Saiyo]

Depends on if you have to do an alligation

 

[910781]

what's the answer, 20?

 

[deleted859689]

I got 20 too. m1v1=m2v2. Def not at all interested in PharmD tho lol.

 

[batki610]

what's the answer, 20?

21.5ml

 

[910781]

i got 21.74 accounting Leukine volume using (500*x)/(250+x) = 40 mhm

 

[deleted859689]

i got 21.74 accounting Leukine volume using (500*x)/(250+x) = 40 mhm

I got the same answer doing the same thing. But since it didn’t match OP’s answer I thought I was either an idiot or missing something and decided not to say anything

 

[Ohene]

Any suggestions on what to focus on regarding the NAPLEX? I plan on taking mine within a month or so but still don't feel really prepared. Ohene.

 

[AAL34]

In real practice, you're going to mix 20 ml of Leukine with 230 ml NS to make a final volume of 250 ml of 40mcg/ml solution.

Otherwise don't be surprised to have an inspector ask if you REALLY use a tuberculin syringe in compounding. Some of these hospital programs that extend a BSA to 4 decimal places cause us a hard time when Taxol is 6mg/ml.

If the question was worded as you presented it (with the answer of 21.74) then it was poorly designed.