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Doctor insights on: What Causes Microscopic Blood In Urine Other Than Kidney Stones

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Microscopic blood in urine, no kidney stone. Bactrim (sulfamethoxazole and trimethoprim) not working, back left side killing me, what else could it be?

Microscopic blood in urine, no kidney stone. Bactrim (sulfamethoxazole and trimethoprim) not working, back left side killing me, what else could it be?

See below: How do you know you don't have a stone? Did you have a ct scan? Was a urine culture done to rule out infection? Blood in the urine needs a standardized work-up to determine the cause - including a ct scan with and without IV contrast and a cystoscopy (where the urologist looks inside your bladder with a telescope). ...Read more

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Urine (Definition)

Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs. It is composed of mostly water, and breakdown products from blood cells impart ...Read more


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Why do kidney stone can cause blood in urine?

Why do kidney stone can cause blood in urine?

Irritation: The lining of the ureters is quite fragile and sensitive. A kidney stone will irritate that lining and cause bleeding which will present as blood in the urine. ...Read more

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Microscopic evidence of blood in urine, passed a kidney stone 3 weeks, am a nonsmoker. What could it mean? What tests would be done?

Microscopic evidence of blood in urine, passed a kidney stone 3 weeks, am a nonsmoker.  What could it mean?  What tests would be done?

Causes of hematuria: Hematuria can be caused by any bleeding in the urinary tract. It could be caused by a tumor of the kidney, kidney stones in the ureters or by a bladder tumor, among other things. Have your urine cultured and if you have hematuria with no uti, see a urologist for evaluation . If you do have a uti, have your urine analyzed after the infection to make sure it resolves. If not, see a urologist. ...Read more

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Can kidney stones cause small pieces of soft stuff to pass along with the blood in urine?

Can kidney stones cause small pieces of soft stuff to pass along with the blood in urine?

Yes: This could be mucous or clot. Not all clots are red, depending upon the age of the clot the red cells which make the clot red may get degraded, and the resulting tissue will no longer be red. ...Read more

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Could a kidney stone or UTI cause large amounts of blood in urine with no pain?

Could a kidney stone or UTI cause large amounts of blood in urine with no pain?

Hematuria: Blood in the urine (hematuria) has several common causes. The main reason for concern is that this is how bladder cancer is usually found. But more common causes include bladder infections, kidney stones, and prostate problems in men. Visible blood in the urine, particularly if not associated with pain or burning with urination needs to be evaluated with kidney imaging and cystoscopy (scope). ...Read more

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Cat scan shows kidney stones in both kidneys. Largest 10mm right side. Had on and off dull low back pain and blood in urine. Can they cause damage?

Cat scan shows kidney stones in both kidneys. Largest 10mm right side. Had on and off dull low back pain and blood in urine. Can they cause damage?

Yes: If the kidney stone blocks the flow of urine from the kidney, you can get permanent kidney damage, but that can take weeks to happen and is associated with severe pain. Also, kidney stones can become infected from pyelonephritis (kidney infection - not a typical urinary tract infection (uti)) and be challenging to treat. Please see your health care provider and consider a referral to urology. ...Read more

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Right side kidney stone, blood in urine?

Kidney stone: Blood in the urine is common for ureteral stones. Need to discuss this with your doctor to determine what type of stone this may be so the proper prevention approach can be developed for you. ...Read more

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Blood in urine, and I have kidney stone 5.7mm. How can I get it out as painlessly as possible?

Lithotripsy: Sound waves are used to pulverise kidney stones so that small fragments may through the urine. It would be prudent to see your doctor for your suitability for the procedure. ...Read more

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I have am 8mm kidney stone located in the inferior pole. Not symptomatic currently, but was discovered by blood in urine. What are my options?

I have am 8mm kidney stone located in the inferior pole. Not symptomatic currently, but was discovered by blood in urine. What are my options?

Urology: My advice - see a urologist and discuss options because there are choices to make in this situation. You and your doctor have to weigh all the risks and benefits that are offered as possible choices. ...Read more

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Dr. Michael Michaels
611 doctors shared insights

Blood In Urine (Definition)

Hematuria is the presence of blood in the urine. When you can see the blood, it's called gross hematuria. When the blood can only be seen under a microscope it is known as microscopic hematuria. Hematuria can be caused by kidney stones, kidney infections, urinary tract infections, an enlarged prostate, cancer, certain medications, and ...Read more


Dr. Ira Katz
64 doctors shared insights

Kidney Stones (Definition)

Seriously- renal stones are the result of postive and negatively charged particles in urine binding together and precipitating as solids- most frequently as calcium- oxalate. This happens most often when the urine is concentrated- ie when you are dehydrated. And trying to pass these stones from the kidney to the bladder is incredibly painful. ...Read more