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If blood appears dark, that is an indicator that it is not fresh. If a person is seeing dark blood in their urine or stool, they should see a doctor immediately. It is possible that there is a serious problem.

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Do Oreos cause dark stool?

Consuming Oreos may cause dark stool due to the dark color of the cookies, but it is usually not a cause for concern unless accompanied by other symptoms.


Why is blood very dark red in some people when they bleed and lighter color red in others?

Bright red blood is called frank blood, its fresher. Dark red blood is older blood that has been sitting for a while. The colour of fresh blood, say from an open wound, can be different due to variances in the number of red blood cells that person has. why this blood dark red? The amount of haemoglobin (red blood cells) that are in a person can differ slightly, this may cause some peoples blood to be darker than others if its fresh, otherwise see above...


Why does my vision turn red in the dark?

When you are in the dark, your eyes adjust to low light by dilating the pupils to let in more light. This can cause the red color of blood vessels in the back of your eye to become more visible, giving the appearance of red vision.


Why is the blood received by the right atrium dark red?

The blood received by the right atrium is dark red because it is deoxygenated blood returning from the body tissues. Deoxygenated blood appears dark red due to the presence of deoxygenated hemoglobin.


What does it mean if your sick is dark brown?

Dark brown vomit can indicate the presence of old blood in the vomit, possibly due to bleeding in the stomach or upper digestive tract. It is important to see a doctor if you are experiencing dark brown vomit to determine the underlying cause and receive appropriate treatment.

Related Questions

What cause a fingertip dark?

usually when blood stops flowing all the way to your finger tip it turns black cause your fingertip receives no blood


What can cause sperm to come out with either blood or a dark substance like old blood dark brown?

I don't know, I'd contact a doctor specializing in this.


Can lupus nephritis cause dark urine and stabbing pains in kidneys?

it can cause dark urine. but some people have no overt symptoms of kidney disease which must be diagnosed by blood and urine tests.


What would cause blood from a wound turn black?

when blood dries, it can get pretty dark and look black. and if its dirty it could look black.


When was Dark Blood created?

Dark Blood was created in 1993.


What would cause blood donation to appear pale instead of dark red Is pale blood more oxygenated?

Yes, but this would be seen in arteries and they do not take blood for donations from arteries.


What Foods cause blood vessels to constrict?

Hot peppers Garlic Dark chocolate Fish oils


What can cause your blood to be a dark rust color?

if it is oxygenated it turns black You drank little too much coffee


Your period this month was dirty dark blood and less in amount please what is d cause?

Changes in menstrual periods can happen for many reasons. Dark blood in scant amounts might be a sign of a problem and should be evaluated by a doctor.


Your little Shihtzus pee is looking really dark suddenly What could be the cause of that?

The most likely cause of the dark urine is dehydration. If it contains blood, there may be an infection or internal bleeding, and you would need to see your veterinarian as soon as possible.


Is dark blood oxygen-rich?

Dark red blood is oxygen-poor. Bright red blood is oxygen-rich.


Is there blood in the dark knight rises?

No there is not blood