Dr. MJ Bazos MD, Patient Handout
Microscopic Hematuria
What is microscopic hematuria?
"Microscopic" means something is so small that it can only be seen through a special tool called a microscope. "Hematuria" means blood in the urine.
So if you have microscopic hematuria, you have red blood cells in your urine, but you can't see the blood when you urinate.
What are some common causes of microscopic hematuria?
Here are some common causes of blood in the urine:
How will my doctor check for microscopic hematuria?
Your doctor will usually start by asking you for a urine sample. He or she will test your urine (urinalysis) for the presence of red blood cells. Your doctor will also check for other things that might explain what is wrong. For example, white blood cells in your urine usually mean that you have an infection. If you have blood in your urine, your doctor will ask you some questions to find out what caused it.
If the cause isn't clear, you may have to have more tests. You might have an ultrasound or an intravenous pyelogram (this is like an X-ray). A cytoscope or endoscope may be used to look inside of your bladder. These tests are usually done by a urologist.
How do I give a urine sample?
A nurse will give you an antiseptic wipe (to clean yourself) and a sterile urine collection cup. In the bathroom, wash your hands with soap and warm water first.
What will my doctor do if I have microscopic hematuria?
If the cause of the blood in your urine is clear, your doctor will probably treat you. Then your doctor will check your urine again to see if the blood is gone. If it's not, your doctor may perform more tests or refer you to a urologist.
Remember that it is always important to find out the cause of blood in your urine.
American Kidney Fund: www.akfinc.org
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK): www.niddk.nih.gov
National Kidney Foundation: www.kidney.org