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Test Code U Sulfite Sulfite Screen, Urine

Clinical System Name

Sulfite Screen, Urine

Sample Requirements

Specimen: Urine

Container(s): Leak-Proof Container, Sterile Screw-Capped Container

Preferred Vol:  10.0 mL

Minimum Vol:  3.0 mL

Processing Instructions

Reject due to:

Spin:N

Aliquot:Y

Temp:-20 C

Storage location: -20 C BCG Box

 

Off-site collection: Aliquots should be taked from a thoroughly thawed & mixed refrigerated sample.  Freeze rapidly and ship frozen.

Stability

Temperature Time
Room temp ≤8 hrs
Refrigerated <8 hrs
Frozen 3 weeks

 

Availability

STAT Performed TAT
N Daily 5 days

 

Contact the Biochemical Genetics Lab for requests outside of stated availability (206)987-2216.

Performing Laboratory

Seattle Children's Laboratory    

Department

Department:  Biochemical Genetics

Phone Number: 206-987-2216

 

 

Methodology

Method: Test strips impregnated with sodium nitroprusside, potassium hexacyanoferrate and zinc sulfate

Analytical Volume: 0.5 mL

Limitations:

CPT Codes

82009

 

Requisition

Biochemical Genetics Requisition

 

On the requisition include clinical inforamtion needed for appropriate interpretation. (Age, gender, diet (e.g. TPN therapy), drug therapy and family history)

Clinical Utility

This test screens for molybdenum cofactor deficiency and isolated sulfite oxidase deficiency. Confirmatory testing is LC-MS/MS analysis of S-sulfocysteine in urine.

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