what is v/v in medical terms?!

Question: v/v is basically mentioned on cough syrup & other liquid medicine bottles.
Answers:
v/v and w/v mean "volume to volume" and "weight to volume".
on a drug bottle it's telling you how the expressed concentration was calculated.

See this link for examples of how these are different:

Other Answers:
This is a ratio of "volume to volume". If the concentration of an ingredient is 2% w/v, there are 2 grams of that ingredient in a total of 100mls. If it is 2% v/v, there are 2 mls of that ingredient in 100mls.

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uuuu. i have no notion

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