Test Directory

Test Code
LYSZM
Test Name
Lysozyme, Serum
CPT Codes
85549
Expected Turnaround Time
3 - 5 days
Clinical Utility

Differential diagnosis of leukemia. Present in association with some cases of myelogenous leukemia and in most cases of monocytic leukemia.

Specimen and Container Info

Specimen Type: Serum

Collection Container: Gold Top, Serum Separator

Alternate Collection Container: Red Top, Plain

Desired Specimen Volume: 1 mL

Collection Instructions
  1. Collect a gold top, serum separator tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells.
  2. Transfer 1 mL of serum to a LabCorp pp transpak frozen purple tube.
Transport Instructions

Transport to the laboratory frozen. 

Stability Requirements

Room Temperature

 4 days

Refrigerated

4 days

Frozen

14 days

Freeze/Thaw Cycles

 Stable x2

Methodology
Enzymatic
Reference Intervals

See patient report.

Limitations

Test may lack specificity when applied to classification of acute leukemia (occasional false-positive cases of M1, M2, and M6).

Alternate Names
  •  Muramidase, Serum
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Monday-Friday