Test ID: Z0129
CPT code: 85549
Specimen Type: Red or SST
Frequency: 3 – 5 days
Instructions: 1 mL Serum from Red or SST, Frozen. Min 0.2 mL.
Text: Differential diagnosis of leukemia. Present in association with some cases of myelogenous leukemia and in most cases of monocytic leukemia. The level of serum lysozyme has been used as a predictor of CNS involvement in these leukemias. Serum lysozyme has been shown to be elevated in a number of conditions, including tuberculosis, sarcoidosis and leukemia.