Question 1

what causes black urine?

Accepted Answer

Melanoma : The most common cause of black urine is melanoma in the bladder.

Question 2

what causes black specs in my urine?

Accepted Answer

Black specs: The most likely cause of black specs in the urine would be tiny fragments of kidney or urinary bladder stones. A urinalysis with microscopic examination would be helpful in identifying objects in your urine. Straining all your urine in a white handkerchief would trap the specs which can be brought to a laboratory for identification.

Question 3

from time to time i pass solid black particles in my urine. what can cause this to happen?

Accepted Answer

Prostate calculi: Small calculi in the prostate are a normal part of aging and some of those may be coming out in the urine. It would be prudent to mention this to your doctor at your next visit.

Question 4

what are the possible causes of urine turning black on standing and exposed to air? provided that the urine was normal colored when passed ?

Accepted Answer

Genetic disease: Alkaptonuria is a rare inherited disorder. It occurs when your body can’t produce enough of an enzyme called homogentisic dioxygenase (HGD). This enzyme  break down a toxic substance called homogentisic acid. When you don’t produce enough HGD, homogentisic acid builds up in your body, the bones &amp; cartilage becomes  discolored/brittle, Urine that turns Brown or black when exposed to air

Question 5

ive been having tiny black bits in urine on and off for a month. what can cause this? i'm a female and i've had urinalysis that come out normal.

Accepted Answer

Here are some...: One thing for sure is you, most likely, okay since you have been free of urinary / genital symptoms. Clinically, what you observed and described could represent the presence of amorphous crystals in alkaline urine which refects what you consumed or the possibility of contamination in urine collection. So, live on as the first choice or seek evaluation/counseling as suggested if insisting or obsess

Question 6

what is the cause of black flecks in urine?

Accepted Answer

Black flecks: First make sure that the urine is not mixed with vaginal debris such as left over uterine shedding from a recent period. If a clean catch urinalysis shows black flecks, a urinary bladder lesion such as a melanoma would be suspected. Consulting a urologist would be recommended if repeated flecks are noted in your urine.

Question 7

getting black worms in urine?? really scary..what may be the reason

Accepted Answer

?worms: If you ACTAULLY see black worms moving in the urine, you certainly may have a parasitic infection.  There are several infections common in the world, so see your Doctor ASAP as there are some treatments that can help you.  Best wishes.

Question 8

i'm 20yo guy.passed a tiny black speck in urine at the beginning of urine stream.what might have caused it?scared of bladder, urethral and such cancers

Accepted Answer

Unlikelky concerns: Cancer of the bladder/urethra is not a consideration at this young age. Most such cancers develop in middle to older age groups. Just  quit worrying about such issues and do not look for any specks etc in the urine. Only if there is blood in the urine you have to get concerned about cancer like problems. So get your mind of this matter.

Question 9

urinate normal colored urine but it turns black if exposed to air for longer periods of time. i have no other symptom. what is the cause?

Accepted Answer

? Alkaptonuria: Alkaptonuria could be the cause and is a genetic disorder so need to see a physician to diagnosis if this is a possibility.Overtime can cause problems with joints if this is the cause and not treated.

Question 10

what can be the possible causes of urine turning black when exposed to air. is it normal? can uti cause urine to turn black after standing for long?

Accepted Answer

Alkaptonuria: A relatively benign metabolic disorder, Alkaptonuria is a likely cause. Taking vitamin C would help. 
Visit this site for info: https://medlineplus.gov/ency/article/001200.htm

Get Virtual Care

For Businesses

About Us

HealthTap Online Primary Care Doctors Accepting New Patients

Doctor answers about:

What causes black specks in urine

A member asked:

What causes black urine?

A member asked:

What causes black specs in my urine?

A member asked:

From time to time i pass solid black particles in my urine. what can cause this to happen?

A member asked:

What are the possible causes of urine turning black on standing and exposed to air? provided that the urine was normal colored when passed ?

A member asked:

Ive been having tiny black bits in urine on and off for a month. what can cause this? i'm a female and i've had urinalysis that come out normal.

A member asked:

What is the cause of black flecks in urine?

A member asked:

Getting black worms in urine?? really scary..what may be the reason

A member asked:

I'm 20yo guy.passed a tiny black speck in urine at the beginning of urine stream.what might have caused it?scared of bladder, urethral and such cancers

A member asked:

Urinate normal colored urine but it turns black if exposed to air for longer periods of time. i have no other symptom. what is the cause?

A member asked:

What can be the possible causes of urine turning black when exposed to air. is it normal? can uti cause urine to turn black after standing for long?

Sponsored Content

HealthTap Online Primary Care Doctors Accepting New Patients

Telemedicine

Primary Care

Manage Your Conditions

Women's Health

Children's Health

Men's Health

Senior Health

Wellness, Prevention & Lifestyle

Sexual Health

Mental & Behavioral Health

Travel Medicine

Urgent Care

Didn't find what you're looking for?

More of what we treat

Allergies

Antibiotics

Asthma

High Blood Pressure

Prescriptions

Type 2 Diabetes

For Businesses

Company

Health Content

Join Us

Download HealthTap

Questions?