Frequency and timing
QD
quaque die — every day
Once daily. Recognize it; do not write it.
On The Joint Commission's Official "Do Not Use" List. QD has been misread as QID, and the period in Q.D. has been misread as an I. Write "daily".
How it gets tested
Exams ask this one as a safety item rather than a vocabulary item: which of these abbreviations should not be used?
Related terms
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