Specimen:

Serum

Collection Medium:

Minimum:

Preferred Pediatric minimum: 2.0 mL serum
Absolute Pediatric minimum: 1.0 mL serum

Rejection Criteria:

Specimens must be received at reference laboratory within 4 days of 
specimen collection; do not collect on Fridays, holidays, day before a 
holiday, or weekends.

Analytic Time:

1 week

Reference Range:

4 - 120 nmoles/hr/mL: median=22 nmoles/hr/mL

Comments:

The Chitotriosidase fluorometric enzyme assay uses 
4-methylumbelliferyl-beta-D-triacetylchitotrioside as substrate.

Testing used for patients on Cerezyme (part of Gaucher Disease clinical 
drug monitoring including ACE, TRAP and CHITO).

Methodology:

Fluorometric enzyme assay

CPT Code:

82657, 84155

See also:
Angiotensin Converting Enzyme (ACE) for Gaucher Clinical Drug Monitoring, Serum
Tartrate Resistant Acid Phosphatase (TRAP) for Gaucher clinical drug monitoring, Serum