Can AZO Cause False Positive UTI Test?

How accurate are azo UTI tests?

AZO Test Strips have the same test pads as the tests used by most doctors.

Our Urinary Tract Infection (UTI) Test Strips when compared to another commercial test showed 94.4% accuracy for the Leukocyte test and 98.4% for the Nitrite Test..

Can phenazopyridine cause false positive?

This medicine may cause false test results with urine sugar tests and urine ketone tests. If you have any questions about this, check with your health care professional, especially if your diabetes is not well controlled.

What does it mean when you have leukocytes in urine but no nitrite?

Leukocytes in the urine without nitrite If the test for leukocyte esterase is positive but finds no nitrite, an infection may still be present. The test is particular to certain bacterial enzymes, which means it can pick up specific bacterial infections with more certainty.

Can UTI symptoms come and go?

Along with this pain are lower urinary tract symptoms which have lasted for more than 6 weeks, without having an infection or other clear causes. Symptoms range from mild to severe. For some patients the symptoms may come and go, and for others they don’t go away.

Can leukocytes in urine be a sign of STD?

Lower UTIs and many STIs have overlapping symptomatology, including the traditional UTI symptoms of dysuria, frequency, and urgency. In addition, abnormal urinalysis (UA) findings of positive leukocyte esterase and pyuria are common in both UTIs and STIs (3–6).

What does it mean when you test positive for leukocytes and negative for nitrite?

If Leukocytes test is negative and Nitrite test is negative: no sign of UTI (if symptoms continue, test again or consult healthcare provider). If Leukocytes test is negative or trace but Nitrite test is positive: results suggest UTI. If Leukocytes test is positive and Nitrite test is positive: results suggest UTI.

What can cause false positive leukocytes?

[19] Hematuria can cause a false positive result for urine WBCs. Leukocytes and WBCs may be present in urine due to other conditions such as appendicitis, diverticulitis, sexually transmitted infection, and renal injury. False negatives can occur in neutropenic/leukopenic patients.

Can AZO affect UTI test?

AZO Urinary Pain Relief may interfere with the reading of any colorimetric urine analysis (such as AZO Test Strips), as the active ingredient, an organic dye, will color the test pads and may make them difficult to read.

What can cause a false positive UTI test?

False positives may present if the urine specimen appears red due to any cause; for example, recent ingestion of common UTI pain relief medication containing phenazopyradine dye or contamination with menstrual fluid.

Why do I have leukocytes in my urine but no infection?

Sterile pyuria It is possible to have white blood cells in the urine without a bacterial infection. Sterile pyuria refers to the persistent presence of white blood cells in the urine when no bacteria are found to be present by laboratory examination.

What can mimic a urinary tract infection?

These include chlamydia, gonorrhea, and trichomoniasis. Simple lab tests are available to distinguish a UTI from an STD. Interstitial cystitis also has many of the same symptoms as a urinary tract infection. It can happen in both men and women and can start after a UTI.

What shows up on a urine dipstick for UTI?

Dipstick testing should include glucose, protein, blood, nitrite, and leukocyte esterase. Leukocyte esterase is a dipstick test that can rapidly screen for pyuria; it is 57-96% sensitive and 94-98% specific for identifying pyuria.

What does it mean if you test positive for leukocytes in your urine?

An increased number of WBCs seen in the urine under a microscope and/or positive test for leukocyte esterase may indicate an infection or inflammation somewhere in the urinary tract. If also seen with bacteria (see below), they indicate a likely urinary tract infection.

What can cause false protein in urine?

Alkaline, dilute or concentrated urine; gross hematuria; and the presence of mucus, semen or white blood cells can cause a dipstick urinalysis to be falsely positive for protein.

What does the beginning of a UTI feel like?

Symptoms of UTIs A burning feeling when you pee. A frequent or intense urge to pee, even though little comes out when you do. Cloudy, dark, bloody, or strange-smelling pee. Feeling tired or shaky.

Do leukocytes in urine always mean infection?

If your doctor tests your urine and finds too many leukocytes, it could be a sign of infection. Leukocytes are white blood cells that help your body fight germs. When you have more of these than usual in your urine, it’s often a sign of a problem somewhere in your urinary tract.

Can you have leukocytes in urine without UTI?

Your doctor will diagnose pyuria if you have at least 10 white blood cells in each cubic millimeter of urine. This often indicates infection. In sterile pyuria, however, persistent white cell counts appear during testing without bacterial infection. There are many causes and treatments associated with this condition.

Does a yeast infection show up in a urine test?

A laboratory will test the urine for certain bacteria to diagnose the condition. A yeast infection will be diagnosed after taking a swab of the affected area. A laboratory will test the swab for the Candida fungus.