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PTCB Exam PTCE Topic 1 Question 105 Discussion

Actual exam question for PTCB's PTCE exam
Question #: 105
Topic #: 1
[All PTCE Questions]

If a physician prescribes 250 mg qid x 10 days, how many milliliters of Keflex oral suspension containing 250 mg per 5ml should be dispensed?

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Suggested Answer: D

250ml/5ml x 4 (20ml per day)

For 10 day supply : 200


by Reed at Jan 15, 2025, 06:14 PM

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Larae
2 months ago
I'm not sure, but I think the answer might be C) 150. Maybe we should double check the calculations.
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Becky
2 months ago
I agree with Lauran, because if you divide 250 mg by 5 ml, you get 50 ml for one dose. So for 4 doses a day for 10 days, it would be 200 ml.
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Ezekiel
2 months ago
Wait, is this a math test or a pharmacy exam? Either way, I'm going with A) 75 ml. It's the smallest number, so it must be the right answer, right?
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Lauran
2 months ago
I think the answer is B) 100.
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Ty
2 months ago
This question is making my head spin. I'm just going to guess and hope for the best. D) 200 ml, final answer!
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Fletcher
29 days ago
The correct answer is A) 75 ml.
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Malinda
1 months ago
That's incorrect. Try again.
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Elly
2 months ago
Hmm, let me think this through. If it's 250 mg per dose, and it's qid (four times a day) for 10 days, that's a total of 10,000 mg. Divide that by 250 mg per 5 ml, and you get... B) 100 ml. Easy peasy!
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Dottie
30 days ago
Great job on the calculation!
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Alonzo
1 months ago
Yes, that's correct. It's 250 mg per 5 ml, so 100 ml is the right amount.
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Charlette
1 months ago
I think the answer is B) 100
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Markus
2 months ago
Is this a trick question? 250 mg qid x 10 days, that's a lot of Keflex! I'm going with C) 150 ml.
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Sylvia
1 months ago
Let's double check the calculation, it might be 75 ml instead.
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Loise
2 months ago
I'm pretty confident it's 150 ml, that's what I'm going with.
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Anjelica
2 months ago
Are you sure? I calculated it to be 200 ml.
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Cory
2 months ago
I think it's actually 100 ml, not 150 ml.
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