Urine Blood Test Results: Is Menstruation the Cause?

Q: Urine Blood Test Results: Is Menstruation the Cause?

Hello： Clinically, it is quite possible to be affected by menstruation. <br>If possible, it may be necessary to repeat the urine test, as your current urine results are abnormal, and further monitoring is reasonable. <br>Wishing you good health.

Urological issues: Hematuria (blood in urine)

Hello Doctor, I started my menstrual period on Monday, and by Friday there was only a little left.
By Saturday, there was no blood.
On the same day, I had a urine test, and the result showed 3+ hematuria.
I haven't experienced any physical discomfort before, so I'm wondering if the positive result is entirely due to my menstrual period.
Thank you, Doctor.

hana, 10~19 year old female. Ask Date: 2021/04/19

Dr. Du Shixi reply Urology

Hello: Clinically, it is quite possible to be affected by menstruation.
If possible, it may be necessary to repeat the urine test, as your current urine results are abnormal, and further monitoring is reasonable.
Wishing you good health.

Reply Date: 2021/04/19

More Info

When interpreting urine test results, particularly concerning the presence of blood (hematuria), it is essential to consider various factors, including the timing of the test in relation to the menstrual cycle. In your case, you mentioned that you were menstruating earlier in the week and that the urine test showed a positive result for occult blood (3+).
Menstruation can indeed influence urine test results. During menstruation, blood can contaminate the urine sample, leading to a false positive result for hematuria. This is particularly relevant if the urine sample is collected shortly after menstruation has ended, as residual blood may still be present in the urinary tract. However, it is also crucial to note that while menstruation is a common cause of false positives, it is not the only potential cause of hematuria.

Other factors that can lead to the presence of blood in the urine include urinary tract infections (UTIs), kidney stones, trauma to the urinary tract, or more serious conditions such as tumors or glomerulonephritis. Given that you have not experienced any physical discomfort or other symptoms, it is possible that the positive result is indeed related to your menstrual cycle. However, it is essential to follow up with further testing to rule out any underlying conditions.

To clarify your situation, it would be advisable to repeat the urine test at a time when you are not menstruating. This will help determine whether the positive result was due to menstrual contamination or if there is a more significant issue that needs to be addressed. Additionally, if there are any changes in your urinary habits, such as increased frequency, urgency, or pain during urination, these should be reported to your healthcare provider.

In summary, while menstruation can cause a positive urine test for blood, it is essential to consider other potential causes and to follow up with further testing if necessary. If you have any concerns or if the positive result persists in subsequent tests, it is crucial to consult with your healthcare provider for a comprehensive evaluation. They may recommend additional tests, such as a urine culture, imaging studies, or a referral to a urologist, depending on your specific situation and medical history.

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