Question: How Accurate Is Dipstick Urine Test For Blood?

Is a trace of blood in urine serious?

While in many instances the cause is harmless, blood in urine (hematuria) can indicate a serious disorder.

Blood that you can see is called gross hematuria.

Urinary blood that’s visible only under a microscope (microscopic hematuria) is found when your doctor tests your urine..

Why would I have blood in my urine but no infection?

Blood in the urine doesn’t always mean you have bladder cancer. More often it’s caused by other things like an infection, benign (not cancer) tumors, stones in the kidney or bladder, or other benign kidney diseases. Still, it’s important to have it checked by a doctor so the cause can be found.

Does drinking water help with blood in urine?

If you have a urinary tract infection or a kidney stone, you should drink a lot of water; blood in the urine also means that you should avoid acidic drinks such as coffee, tea, or citrus juices, all of which can irritate the bladder.

How long does it take for blood in the urine to go away?

How long hematuria lasts depends on its underlying cause. For example, hematuria related to strenuous exercise typically goes away on its own within 24 to 48 hours. Hematuria resulting from a urinary tract infection will end when the infection is cured.

What is the most common cause of microscopic hematuria?

The most common causes of microscopic hematuria are urinary tract infection, benign prostatic hyperplasia, and urinary calculi. However, up to 5% of patients with asymptomatic microscopic hematuria are found to have a urinary tract malignancy.

What are normal urine dipstick results?

Normal urinary proteins values are less than 150 mg/d and are undetectable using urinary dipstick. The urinary dipstick only detects the presence of albumin and no other proteins. When urinary protein values exceed 300-500 mg/d, the dipstick test result becomes positive.

How accurate is the urine dipstick test?

A positive urine dipstick has a great chance of being false positive. The average of the positive predictive value in the studies shows 61 percent. However, a negative urine dipstick seems to be more reliable, in which the negative predictive value shows an average of 83 percent.

What does blood in urine dipstick mean?

Microscopic hematuria is a result of there being an amount of blood in the urine that can only be seen through a microscope. Dipstick hematuria results when oxidation of the urine test strip causes a color change. It does not always mean that blood cells are present in the urine.

Why are urine dipstick testing results so valuable to providers?

The urine dipstick test can be used for UTI screening and reduces the number of negative urine samples sent for urine culture. Moreover, primary care physicians can advise the SCI patients to self-screen UTI by the urine dipstick test because it is easy to use and inexpensive.

Should I be worried about microscopic hematuria?

If blood is detected in these ways, then you may have “microscopic hematuria.” There are many causes for blood in the urine. Most are not of worry, but some may call for care by your health care provider.

Can lack of water cause blood in urine?

It might be a lack of water, injury to the bladder, or the breakdown of more red blood cells in aerobic exercise.

What is a high level of blood in urine?

Some more serious causes of blood in the urine are cancer, infection, enlarged prostate (men only), kidney or bladder stones, and certain diseases (like sickle cell anemia and cystic kidney disease). Blood in the urine can often be diagnosed with urine tests.

What is the normal range for blood in urine?

Normal Values A normal result is 4 RBC/HPF (red blood cells per high power field) or less. The examples above are common measurements for results of these tests. Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples.

What shows urine infection on dipstick?

Leukocyte esterase is an enzyme released by neutrophils and macrophages. A urine dipstick positive for this enzyme indicates pyuria (an increased number of leukocytes). Urinary tract infections including cystitis and urethritis are common causes of pyuria.

Can a urine test strip detect UTI?

You hold them in your urine stream or dip them in a sample of your urine. The strips test for a substance (called nitrite) produced by most UTIs. Certain types of strips also test for white blood cells (leukocytes). Some types of dipsticks can test for both nitrite and leukocytes.

Can dipstick urinalysis detect blood in the urine?

Blood. Dipstick urinalysis is able to detect haemolysed and non-haemolysed blood in the urine. The pseudoperoxidase reaction of erythrocytes, free haemoglobin or myoglobin catalyses chromogen oxidation on the dipstick to produce a colour change.

What tests will urologist do for blood in urine?

A urinalysis can also check for a urinary tract infection or the presence of minerals that cause kidney stones. Imaging tests. Often, an imaging test is required to find the cause of hematuria. Your doctor might recommend a CT or MRI scan or an ultrasound exam.

Can hematuria be normal?

Blood in the urine, also called hematuria, is not a normal finding, but it is not uncommon. Although blood in the urine can be worrisome for the person who experiences it, it is not necessarily a cause for alarm. Hematuria is a sign, not a disease itself.