XL2 Audio Analyzer. With the balanced XLR and unbalanced RCA inputs, the XL2 is a comprehensive audio analyzer. It simultaneously measures level, distortion (THD+N) and frequency.The internal loudspeaker or headphone is used for audible monitoring of the test signal or the residual distortion.L2 Audio Analyzer. With the balanced XLR and unbalanced RCA inputs, the XL2 is a comprehensive audio analyzer. It simultaneously measures level, distortion (THD+N) and frequency.
Leukocyte esterase is a screening test used to detect a substance that suggests there are white blood cells in the urine. This may mean you have a urinary tract infection. If this test is positive, the urine should be examined under a microscope for white blood cells and other signs that point to an infection.
Having leukocytes in urine most often indicates that you have a bacterial infection. In normal circumstances, small amounts of leukocytes are found in urine. This is because leukocytes from old and damaged cells tend to be expelled through urine. A urinalysis is needed to diagnose the leukocyte levels in urine.