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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Does A Bruise Cause Effects On The Blood Test?

I had a bad bruise a couple days ago that caused me to have dark urine. This morning I am taking a normally scheduled blood test that I have been fasting for all night. Will the bruise (dark urine) cause this test to show weird (temporary) indications that may confuse my Doctor?
Tue, 6 May 2014
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General & Family Physician,  's  Response
Hello dear,
Bruise is unlikely to affect your blood test(you have not mentioned which test it is),though a large bruise can alter the values of bilirubin.
Thank you.
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Does A Bruise Cause Effects On The Blood Test?

Hello dear, Bruise is unlikely to affect your blood test(you have not mentioned which test it is),though a large bruise can alter the values of bilirubin. Thank you.