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Test Code LAB1946 GL-3 Level, Urine

Important Note

This test is only offered to Seattle Children's Biochemical Genetics providers. We do not offer this test or coordinate pass throughs for external clients.


If you are not associated with the Seattle Children's Biochemical Genetics clinic, please contact LabCorp / Sanofi Genzyme's Rare Disease Program at (888) 681-1701 or

Additional Codes

GL-3 U

Clinical System Name

GL-3 Level, Urine


CTH (ceramide trihexoside); Fabry; Urine Gb3; Urine globotriaosylceramide

Sample Requirements

Specimen: Urine

Container(s): Sterile Container

Preferred Vol: 3.0 mL

Minimum Vol: 1.0 mL


Processing Instructions

Reject due to:

Spin: N

Aliquot: Y

Temp: -20 C

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


Off-site Collection: Transfer 3.0 mL urine (Min. 1.0 mL) to a plastic Falcon tube affixed with a large Epic label. Freeze at -20 C.


Specimen Type Temperature Time
Urine Room Temp Unacceptable
  Refrigerated 14 d
  Frozen 3 m



STAT Performed TAT
N   14 d


Performing Laboratory


Sanofi Genzyme Rare Disease Specialty Testing Program

550 17th Ave, Suite 300

Seattle, WA 98122


Phone Number: (206) 861-7455


Department: Send Outs

Phone Number: (206) 987-2563

Send Out Instructions

Reference Test Name: Urine GL-3
Reference Test Number: 504668
Instructions: Send frozen urine on dry ice via Delivery Express to LabCorp Seattle.