What Can Cause A False Positive UTI Test?

What causes false positive leukocytes in urine?

[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..

Are at home UTI test accurate?

Home test kits are not 100% accurate. If you still have symptoms of a UTI even though the test results show that you don’t have an infection (negative result), tell your doctor. Painful urination can be caused by other problems, such as a vaginal yeast infection or sexually transmitted infection.

Can you have leukocytes in urine without infection?

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 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 is a high number of leukocytes in urine?

Diagnosis. If you’re healthy, you can still have elevated leukocytes in your bloodstream and urine. A normal range in the bloodstream is between 4,500-11,000 WBCs per microliter. A normal range in the urine is lower than in the blood, and may be from 0-5 WBCs per high power field (wbc/hpf).

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.

Can urine culture be false positive?

False positive urine results can cause patients to be treated when treatment is not indicated, prolong convalescence, and affect hospital infection rates. Microorganisms present in urine will continue to multiply if the specimen container does not have a preservative to arrest mircobial growth.

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.

What if I have leukocytes in my urine but no nitrites?

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.