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Deborah, Nurse (RN)
Category: Health
Satisfied Customers: 3217
Experience:  Registered NP - Multispeciality
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Does blood float or sink in toilet water, such as in vomit?

Customer Question

Does blood float or sink in toilet water, such as in vomit?
Submitted: 11 years ago.
Category: Health
Expert:  Deborah replied 11 years ago.

It can either float or sink depending on how much blood is vomited. If it is bright red blood, it may float, if it is dark, red blood it may sink.

Regardless, if you are vomiting large amounts of blood, you need to be seen by your doctor as it would be irrelevant if it did sink or float. Blood in vomitus or stool may be the indication of a serious medical condition that warrants medical evaluation.