Leukocyte esterase (WBC esterase)

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Leukocyte esterase

Alternate Names : WBC esterase

Definition

Leukocyte esterase is a urine test to look for white blood cells and other signs associated with infection.

Why is the Test Performed?

Leukocyte esterase is a screening test used to detect a substance that suggests there are white blood cells in the urine, which may mean you have a urinary tract infection.

This test is part of the routine urine dipstick test. If this test is positive, the urine should be examined under a microscope for white blood cells and other abnormalities associated with infection.

How is the Test Performed?

A clean catch urine sample is needed. See: Urine specimen - clean catch

How to Prepare for the Test?

No special preparation is necessary for this test.

How will the Test Feel?

The test will involve only normal urination, and there is no discomfort.

Pictures & Images

Male urinary system

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Leukocyte esterase : Definition
Leukocyte esterase : Why is the Test Performed?
Leukocyte esterase : How is the Test Performed?
Leukocyte esterase : How to Prepare for the Test?
Leukocyte esterase : How will the Test Feel?
Leukocyte esterase : Risks
Leukocyte esterase : Special Considerations
Leukocyte esterase : Normal Values
Leukocyte esterase : What do Abnormal Results Mean?
Leukocyte esterase : Pictures & Images
Male urinary system

Review Date : 1/10/2010
Reviewed By : David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc., and Louis S. Liou, MD, PhD, Assistant Professor of Urology, Department of Surgery, Boston University School of Medicine.

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