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Dr Basu
Dr Basu, Experienced Specialist
Category: Medical
Satisfied Customers: 29282
Experience:  MD
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Blood apparent in urine sample by litmus test. not visible

Customer Question

blood apparent in urine sample by litmus test. not visible to naked eye in sample please give possible causes.
Submitted: 5 years ago.
Category: Medical
Expert:  Dr Basu replied 5 years ago.
The views expressed by me are for educational purposes only and do not establish a doctor patient relationship.
Thanks for your question.
This is also known as microhematuria.
This is not visible in naked eye as the very small blood particles are present.
The common cause is still bladder or urinary tract infection.
Other possibilities include:
1. Kidney stones can still cause this.
2. Kidney disease like glomerulonephritis from diabetes, hypertension, autoimmune disorder
3. Bladder lesions --precancerous lesions tumors
4. Renal cell carcinoma--kidney cancer usually presents without any other symptoms.
5. Erroneous result --meaning problem with the litmus test --should be verified by a related test in the laboratory and with microscopic examination.
Hence, further evaluation is necessary.
Urine analysis, serum creatinine and BUN level, kidney ultrasound or Ct scan and a bladder cystoscopy are essential.
Best wishes,