ARUP's Laboratory Test Directory

Lysozyme, Urine : 0050368

Mnemonic: LYSOZ U

Methodology: Quantitative Radial Immunodiffusion
Performed: Mon-Fri
Reported: 1-5 days
Specimen Required: Collect: Random urine.

Specimen Preparation: Transfer 3 mL aliquot from a well-mixed random urine collection to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature: Refrigerated. Also acceptable: Frozen.

Stability (collection to initiation of testing): Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 3 months
Reference Interval:
Less than 4 µg/mL
Interpretive Data:

Refer to Statement D under Testing Information at http://www.aruplab.com.
Note: Elevated levels of urine lysozyme occur during severe renal insufficiency, renal transplant rejection, urinary tract infections, pyelonephritis, glomerulonephritis, and nephrosis. Urine lysozyme levels may also be elevated in acute myelomonocytic leukemia (FAB-M4), chronic myelomonocytic leukemia (CMML), and chronic myelocytic leukemia (CML).
CPT Code(s): 85549
Cross References: Muramidase (Lysozyme, Urine)