Blood in your urine is alarming, but it doesn’t automatically mean kidney disease. The medical term is hematuria, and it affects up to 30% of the general population according to research published in JAMA. Most cases trace back to something treatable, like a urinary tract infection or kidney stones. A smaller number points to something more serious. The only way to know the difference is a proper urologic evaluation.
Here’s the part most articles skip: the cause of blood in your urine changes your entire treatment path. And waiting “to see if it goes away” is the single most expensive mistake people make with this symptom.
What Are the Two Types of Hematuria?
There are two kinds. Gross hematuria is the one you can see. Your urine looks pink, red, or brownish, and it gets your attention fast. Microscopic hematuria is invisible to the naked eye and only shows up when a lab examines your urine sample under a microscope. It’s typically caught during a routine physical or while testing for something else.
Both types need follow-up. Microscopic hematuria is easy to dismiss because you feel fine, but the 2025 AUA/SUFU Microhematuria Guideline Amendment made an important update. Even low-risk patients now need a repeat urinalysis within six months. The old advice of “just wait and recheck eventually” has been replaced with a structured risk-based timeline.
Related symptoms can include back or abdominal pain, burning during urination, and fever. But plenty of people with hematuria have zero additional symptoms.
What Causes Blood in Urine?
Kidney disease is the first thing most people worry about. But it’s actually just one item on a long list. The most common causes include:
- Urinary tract infections (the most frequent culprit, especially in women)
- Kidney stones
- Enlarged prostate or prostate infection
- Bladder or kidney infections
- Strenuous exercise (sometimes called “runner’s hematuria”)
- Certain medications, including blood thinners
Less common but more serious causes include bladder cancer, kidney cancer, polycystic kidney disease, sickle cell disease, and endometriosis.
Here’s a contrarian point that I think more urologists should be vocal about. Primary care providers sometimes attribute microscopic hematuria to a UTI or label it “benign” without ever referring the patient for a proper workup. That leads to delayed diagnoses. According to 2025 AUA advocacy data, over 60% of U.S. counties don’t have a single practicing urologist, which makes timely referral even harder for people in rural areas.
Does Hematuria Always Signal Kidney Disease?
No. And that’s worth repeating. Hematuria is a symptom, not a diagnosis. Your kidneys filter waste from your blood, and healthy kidneys keep blood cells out of your urine during that process. When something disrupts filtration (inflammation, infection, structural damage), red blood cells can leak through. But that “something” could be located anywhere in the urinary tract, not just the kidneys.
A nephrology referral only becomes the right move if blood work shows elevated creatinine or your urologist suspects medical renal disease. For most patients, the evaluation stays in the urologic lane: urinalysis, imaging, and often a cystoscopy to look directly inside the bladder.
How Is Blood in Urine Diagnosed and Treated?
Treatment depends entirely on the cause. A UTI gets antibiotics. Kidney stones might need shockwave lithotripsy to break them into passable fragments. An enlarged prostate can often be managed with medication or a minimally invasive procedure.
The diagnostic workup itself varies based on your risk category under the 2025 AUA guidelines. Low-risk patients might start with a repeat urinalysis. Intermediate and high-risk patients typically need cystoscopy plus imaging (renal ultrasound or CT urogram). Without insurance, a cystoscopy alone runs $500–$2,000, and a full workup can reach $1,000–$3,000 out of pocket.
One major change in the 2025 guidelines: women over 60 who were previously classified as high-risk by default are no longer automatically placed in that category if they have no other risk factors. That’s a significant de-escalation that reduces unnecessary procedures for a large group of patients.
Why You Shouldn’t Wait on Blood in Your Urine
The gap between early evaluation and late-stage treatment is staggering. Early cystoscopy and imaging cost a few thousand dollars. Late-stage bladder cancer treatment involving surgery, chemotherapy, and immunotherapy routinely exceeds $100,000–$200,000 per patient.
I’ve seen patients who noticed pink urine once, Googled it, read that it “might be nothing,” and didn’t follow up for a year. By then, what could have been caught early wasn’t early anymore. The team behind your urologic care should be looped in the moment you notice something off.
If you’re experiencing blood in your urine, schedule an appointment with Modern Urology to get a proper evaluation based on the latest evidence-based guidelines.
FAQs
How common is blood in urine?
Hematuria affects up to 30% of people at some point, and the likelihood increases with age. Many cases are microscopic, meaning they’re only detected through lab testing rather than visible color changes.
Does blood in urine always mean kidney disease?
No. Most cases of hematuria are caused by conditions outside the kidneys, such as urinary tract infections, kidney stones, or prostate problems. A nephrology referral typically only happens if blood work reveals elevated creatinine levels or a specific renal condition is suspected.
When should I see a urologist about blood in my urine?
Any time you see visible blood in your urine, you should schedule an evaluation promptly. For microscopic hematuria found during routine testing, the 2025 AUA guidelines recommend repeat urinalysis within six months for low-risk patients, with faster evaluation for those at intermediate or high risk.
How much does a hematuria workup cost without insurance?
Add imaging (ultrasound or CT urogram) and lab work, and a complete workup can reach $1,000–$3,000 out of pocket. These costs vary by region and provider.
Can exercise cause blood in urine?
Yes. Intense physical activity, especially long-distance running, can temporarily cause hematuria. It usually resolves within 48–72 hours. If blood persists after rest, it’s not exercise-related and needs professional evaluation.
Did the 2025 AUA guidelines change who needs cystoscopy?
Yes. The updated guidelines removed automatic high-risk classification for women over 60 who have no other risk factors, which means fewer patients in that group will undergo cystoscopy.
What’s the worst-case scenario if I ignore blood in my urine?
Delayed evaluation is where small problems become expensive ones. Early-stage bladder cancer caught through cystoscopy and imaging is far more treatable than advanced disease requiring surgery, chemotherapy, and immunotherapy.
Dr. Carolyn Fronczak is the founder and Medical Director of Modern Urology Colorado. She is board certified by the American Board of Urology, with expertise in both men’s and women’s urologic care. She completed her medical degree at the University of Colorado School of Medicine and her surgical training at the University of Nebraska Medical Center. Dr. Fronczak has treated thousands of patients in the Boulder/Denver area.