Chitotriosidase, Plasma

Chitotriosidase, Plasma

Overview

The Chitotriosidase, Plasma test measures the level of the enzyme chitotriosidase in the blood. This enzyme is produced by activated macrophages (a type of white blood cell) and is commonly used as a biomarker for certain lysosomal storage disorders, especially Gaucher disease. It may also help monitor disease progression and response to treatment.

Why is this Test Done?

Your doctor may recommend this test to:

• Aid in the diagnosis of Gaucher disease.
• Monitor the effectiveness of enzyme replacement therapy.
• Assess disease progression in lysosomal storage disorders.
• Support the evaluation of unexplained enlargement of the liver or spleen.
• Investigate certain rare metabolic disorders.

Symptoms That May Require Testing

• Enlarged liver or spleen
• Bone pain or frequent fractures
• Fatigue and weakness
• Easy bruising or bleeding
• Low platelet count
• Growth delay in children

Sample Required

• Sample Type: Plasma
• Preparation: No special fasting is usually required unless advised by your physician.

Interpretation of Results

• Elevated Levels: May indicate Gaucher disease or other conditions involving activated macrophages. Increased levels can also be seen in some inflammatory or infectious diseases.
• Normal or Low Levels: May reduce the likelihood of Gaucher disease; however, some individuals have a genetic deficiency of chitotriosidase, making the test less informative. Additional diagnostic tests may be required.

Who Should Consider This Test?

• Individuals suspected of having Gaucher disease.
• Patients undergoing treatment for Gaucher disease.
• People with unexplained enlargement of the liver or spleen.
• Individuals with a family history of lysosomal storage disorders.

Benefits

• Supports early diagnosis of Gaucher disease.
• Helps monitor treatment response.
• Assists in disease management.
• Simple blood test with valuable clinical information.

Note: The Chitotriosidase test is typically interpreted alongside clinical findings, imaging studies, and confirmatory genetic or enzyme assays for an accurate diagnosis.