HEXOSAMINIDASE A & TOTAL LEUKOCYTES/MOLECULAR REFLEX
General Information
HLAB/HOL Code: HEXOS
UPHSM LIS Test #: 6498
Schedule: Monday, Thursday, Friday
Testing Time: 4 days
Testing Lab: Mayo Labs
UPHSM LIS Test #: 6498
Schedule: Monday, Thursday, Friday
Testing Time: 4 days
Testing Lab: Mayo Labs
Specimen Info
Only 1 specimen type required, unless otherwise specified
Volume: 6.0 mL whole blood
Temperature: Refrigerate
Tube Type: 1 Yellow top (ACD soln B)
Collection Info:
Specimen must arrive within 96 hours of draw to be stabilized. Draw specimen Monday through Thursday only and not the day before
a holiday. Specimen should be drawn and packaged as close to shipping time as possible. Do not transfer blood to other containers.
Temperature: Refrigerate
Tube Type: 1 Yellow top (ACD soln B)
Collection Info:
Specimen must arrive within 96 hours of draw to be stabilized. Draw specimen Monday through Thursday only and not the day before
a holiday. Specimen should be drawn and packaged as close to shipping time as possible. Do not transfer blood to other containers.
Methods
Heat Inactivation, Fluorometric, Semiautomated
CPT Codes
83080 Hexosaminidase A and Total, Leukocytes/Molecular Reflex
Reflex tests if appropriate:
81255 Tay-Sachs, Mutation Analysis (TSDP)
88233, 88240 Fibroblast Culture for Genetic Test (CULFB)
88235, 88240 Amniotic Fluid Culture/Genetic Test (CULAF)
81265 Maternal Cell Contamination, B (MATCC)
81266 Each Additional Specimen
Comp analysis using STR (bill only)
Additional comp analysis w/STR (bill only)
Reflex tests if appropriate:
81255 Tay-Sachs, Mutation Analysis (TSDP)
88233, 88240 Fibroblast Culture for Genetic Test (CULFB)
88235, 88240 Amniotic Fluid Culture/Genetic Test (CULAF)
81265 Maternal Cell Contamination, B (MATCC)
81266 Each Additional Specimen
Comp analysis using STR (bill only)
Additional comp analysis w/STR (bill only)
* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
Reference Range
HEXOSAMINIDASE TOTAL
< or = 15 years: > or = 20 nmol/min/mg
> or = 16 years: 16.4-36.2 nmol/min/mg
HEXOSAMINIDASE PERCENT A
< or = 15 years: 20-80% of total
> or = 16 years: 63-75% of total
Reflex testing performed when the initial hexosaminidase A is <63% for patients > or = 16 years old or when the initial hexosaminidase A is <20% for patients < or = 15 years old.
< or = 15 years: > or = 20 nmol/min/mg
> or = 16 years: 16.4-36.2 nmol/min/mg
HEXOSAMINIDASE PERCENT A
< or = 15 years: 20-80% of total
> or = 16 years: 63-75% of total
Reflex testing performed when the initial hexosaminidase A is <63% for patients > or = 16 years old or when the initial hexosaminidase A is <20% for patients < or = 15 years old.
