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28 years
I drink more than 2 L of water per day, 1 - 2 cups of Coffee, I take no medication, no vitamins and my urine is still dark colored even by the end of the day..why?
Sep 5, 2013

Dr. Salim Saab Otolaryngology (ENT)
A renal function test must be done as well as a urine test in order to assess the cause of this dark colour of your urine.
Dr. Fadi Dalati Urology
There are many reasons that could lead to dark colored urine. We need to differenciate between dark urine and hematuria, which means blood in urine.

1)Dehydration and poor water intake forces the kidneys to concentrate urine in order to preserve water, resulting in dark urine. during summer season, we tend to loose big amount of body water and thus 2L of water might not be enough to keep the nody well hydrated

2) Certain foods could result in red-colored urine, such as beets

3) Tea-colored urine may indicate bilirubin in urine which may be caused by gallbladder stones diseases

4) Certain medications could change the color of urine, or even result in hematuria, such as rifampin and anti-coagulants

5) Urinary stone disease can lead to hematuria

6) Urinary tract infections may present with hematuria

7) Bladder tumors could present with hematuria, though it is very very rare in your age group

8) Hematuria could be due to kidney parynchemal diseases, in which RBC morphology (shape) would be altered

First thing to do would be to do a urine analysis test with RBC morphology, as well as creatinine in blood, and then visit your urologist for further testing and treatment if needed