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A member asked:
I just took a drug test a few minutes ago and i've noticed black specks floating around. it may have been brown. what does this mean?
A doctor has provided 1 answer
Hard to say: It could be debris from the cup or it could represent possible particulate matter from the urinary tract. Sometimes there can be small enough sediment from early kidney stones but if there was no pain or discomfort, passage of kidney stones that were fully formed is much less likely.
Answered 5/24/2015
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