Three things to know
- A positive dipstick may need confirmation with microscopy.
- Kidney and urology evaluations answer different questions.
- Blood-thinning medicines do not eliminate the need to assess the cause.
What the finding means
Visible hematuria changes the urine's appearance. Microscopic hematuria is detected through laboratory examination. Some foods, medicines, menstrual contamination or other factors can affect appearance or testing, so your clinician may ask for a repeat properly collected sample.
What your clinician will ask
Useful details include pain, fever, urinary symptoms, recent exercise, infection, smoking history and whether blood clots are present. Bring previous urine results, kidney tests and imaging. Mention blood thinners and supplements, but do not stop a prescribed medicine on your own.
Follow the evidence, not the urine color alone
When kidney expertise is relevant
Blood accompanied by protein in urine, reduced kidney function or findings suggesting inflammation may require nephrology input. Additional blood or urine tests can help assess the filtering structures of the kidneys. Some situations need a biopsy discussion; many do not.
When urology is relevant
A urologist may evaluate the bladder and urinary tract with imaging or other tests depending on risk and circumstances. A reassuring kidney blood test does not rule out every urinary-tract cause. Follow through with the recommended evaluation even if visible blood disappears.
Questions to bring to your visit
- Was blood confirmed on microscopy?
- Do I need urology as well as nephrology?
- What follow-up is needed if the next test is clear?
Common questions
Can blood in urine be painless?
Yes. Painless visible blood still deserves medical assessment.
Does it always mean cancer?
No. There are many possible causes, but some require timely investigation.
Sources & further reading
- NIDDK: Blood in urine (opens in a new tab)
- National Kidney Foundation: Albuminuria (opens in a new tab)
Education supports, and does not replace, individual care. Dialysis treatments and transplant evaluations are delivered through the appropriate dialysis programs and transplant centers. External resources do not imply endorsement of AspireMed.