Urine Blood Test Results: Possible Causes and Concerns - Internal Medicine

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Health check-up


My health check indicated the presence of blood in my urine, but I was experiencing irregular menstrual cycles and hadn't had my period for 2-3 months.
What could be the reason for this?

cc, 20~29 year old female. Ask Date: 2003/01/05

Dr. Yang Jun reply Internal Medicine


Hello: In response to your inquiry regarding the presence of hematuria (blood in urine) found during a health check-up, it can be clinically classified into glomerular hematuria and non-glomerular hematuria.
Glomerular hematuria originates from intrinsic renal parenchymal disease, while non-glomerular hematuria can occur due to various reasons such as urinary tract infections, urinary system tumors, urinary stones, medication effects, trauma, metabolic causes, or hereditary conditions (such as medullary sponge kidney).
Additionally, females may experience hematuria due to menstruation-related factors, which should be distinguished.
It is advisable to consult a nephrologist for further evaluation, including urine re-testing, medical history inquiry, and physical examination for confirmation.
Regarding irregular menstrual cycles, such as not having a period for 2-3 months, it is essential to consult a gynecologist for further examination.

Reply Date: 2003/01/05

More Info


When interpreting urine test results, particularly concerning the presence of blood (hematuria), it is essential to consider various factors that could contribute to this finding. In your case, you mentioned that your urine test indicated the presence of occult blood while you were experiencing irregular menstrual cycles, with a delay of 2-3 months. This context is crucial for understanding the potential causes of your test results.

Firstly, it is important to note that the presence of blood in urine can arise from multiple sources. These include urinary tract infections (UTIs), kidney stones, trauma, or more serious conditions such as tumors in the urinary tract or kidneys. However, in women, menstrual blood contamination is a common cause of hematuria, especially if the urine sample is collected during or around the time of menstruation. If you were experiencing irregular periods, it is possible that the blood detected in your urine could be due to menstrual blood contamination rather than a pathological condition.

In your situation, since you mentioned that your menstrual cycle was irregular, it is advisable to consider the timing of the urine test in relation to your menstrual cycle. If the test was conducted close to when you might have had your period, this could explain the positive result for blood in your urine. It is also worth noting that certain foods, medications, or supplements can affect urine color and composition, potentially leading to false positives for blood.

Given that your urine test showed occult blood, it is prudent to follow up with further testing to rule out any underlying conditions. A repeat urine test, ideally conducted when you are not menstruating, can help clarify whether the initial finding was due to contamination or if there is a genuine concern that needs to be addressed. Additionally, a urinalysis can provide more detailed information, such as the presence of red blood cells (RBCs), white blood cells (WBCs), and other indicators of urinary tract health.

If the follow-up tests continue to show blood in your urine, further investigations may be warranted. This could include imaging studies such as an ultrasound or CT scan to visualize the kidneys and urinary tract, as well as a cystoscopy, which allows direct visualization of the bladder and urethra.

In summary, while the presence of blood in your urine can be concerning, it is essential to consider the context of your menstrual cycle and the timing of the test. If menstrual contamination is ruled out and blood is still present, further evaluation is necessary to determine the underlying cause. Always consult with your healthcare provider for personalized advice and to discuss any further testing that may be appropriate for your situation. Regular monitoring and open communication with your healthcare team can help ensure that any potential health issues are addressed promptly and effectively.

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