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HelpTest Code LAB1967 Sulfite Screen, Urine
Clinical System Name
Sulfite Screen, Urine
Synonyms
U Sulfite
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
CPT Codes
82009
Methodology
Method: Test strips impregnated with sodium nitroprusside, potassium hexacyanoferrate and zinc sulfate
Analytical Volume: 0.5 mL
Limitations:
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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