User • 2026. 03. 03.
The color wasn’t completely dark red, but more like a diluted reddish tone mixed with water.
I had a blueberry smoothie earlier—could that be related?
Ryu Kyung-ho
Goldman UrologyDirector, Goldman Urology Gangnam
Hello, this is Dr. Ryu Kyung-ho from Goldman Urology Clinic, Gangnam Branch.
Hematuria (blood in the urine) can occur even during adolescence due to various causes. If your urine appears reddish compared to usual, it may indicate inflammation in the urinary tract or a temporary physical change.
Certain foods containing strong pigments can also affect urine color and may cause what is known as pseudo-hematuria, where the urine appears red without actual blood. Therefore, it is important to undergo proper medical evaluation for an accurate diagnosis.
If the discoloration is caused by food, the urine color typically returns to normal over time. However, if you experience pain during urination or discomfort in the flank area, it may not be a simple pigment-related change. Additionally, temporary hematuria can occur after intense physical activity or fatigue.
A urine test is necessary to determine whether red blood cells are actually present. Based on the results, appropriate treatment can be provided, and recovery is usually prompt. There is no need for excessive concern, but it is advisable to visit a urology clinic for proper evaluation.
At our urology clinic, each branch is equipped with extensive clinical experience. We carefully assess each patient’s symptoms and overall health to provide an accurate diagnosis and a personalized treatment plan.
Identifying the exact cause is the first step toward effective treatment. If your symptoms persist, we strongly recommend visiting a urology clinic. We hope this information is helpful. Thank you.
* This answer is based on medical documents and cannot replace an actual diagnosis.