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Test Code GL-3 U GL-3 Level, Urine


Gb3 (globotriasylceramide)

CTH (ceramide trihexoside)

HEX4, glucose tetrasaccharide

Sample Requirements

Specimen: Urine

Container(s): Sterile Container

Preferred Vol: 3 mL

Minimum Vol: 2 mL


Processing Instructions

Reject due to:

Spin: N

Aliquot: N

Temp: -20 C

Storage location: Transfer urine to a plastic Falcon tube affixed with a large Cerner label. Deliver sample to CPA -20 freezer Send Outs rack.


Off-site collection:


Specimen Type Temperature Time
Urine Room temp N
  Refrigerated N
  Frozen Y



STAT Performed TAT
N   Up to 2 m


Performing Laboratory

Genzyme Clinical Specialty Laboratory

1 The Mountain Road
Framingham, MA 01701-9322


Sample Questions: (508) 270-2449

Result Questions: (508) 661-1894


Department: Send Outs

Phone Number: (206) 987-2563

Send Out Instructions

Reference Test Name: Urine Gl-3 & Lyso Glc-4 Testing
Reference Test Number:  
Instructions: Send frozen urine on dry ice. Saturday deliveries are acceptable.