Sulfhydryl Groups Qualitative, Urine (Sendout)

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General Information

Lab Name
Lab Code
482
External Test Id
LAB1966
Description

Clinical Utility: Screen for elevated excretion of cystine or homocystine.

Ordering Requirements: Include relevant clinical information (diet/TPN therapy, drug therapy, family history, etc.) in the Epic order comment to ensure proper interpretation.

Forms & Requisitions
Synonyms
Cystine Qualitative Urine, Cystinuria, Homocystine Qualitative Urine, Homocystinuria, LAB1966

Interpretation

Method

High pressure liquid chromatography using an ion exchange column

Ref. Range Notes

Reference Range: Negative

Ordering & Collection

Specimen Type
Urine
Collection

Collect 10 mL random urine in a sterile urine collection container.

Forms & Requisitions
Handling Instructions

Outside Laboratories: Mix sample thoroughly and aliquot urine into a separate screw-top plastic vial, leaving room for expansion. Freeze urine at -20°C while awaiting shipment. Transport samples on dry ice. Include any relevant clinical information on the DLMP requisition.

Stability: Frozen (preferred): 1 month; Refrigerated: 8 hours; Ambient: 2 hours.

Quantity
requested: 10 mL urine
minimum: 3 mL urine

Processing

Processing

Mix sample thoroughly. Aliquot urine into a separate screw-top plastic vial, leaving room at the top for sample expansion. Freeze urine at -20°C.

Login: SEND1-;FREEZE

  • RSNDT1: SCHL
  • RSTYP1: URN
  • RTSRQ1: ;Sulfhydryl Groups Qualitative, Urine (SCHL Test LAB1966)

Sendouts:

  • Order SCHL Test: LAB1966.
  • If clinical information (diet, drug therapy, family history) is included with the order, print the Epic requisition and send it with the SCHL requisition.
  • Send samples on dry ice via DLMP or Delivery Express courier.

Stability: Frozen (preferred): 1 month; Refrigerated: 8 hours; Ambient: 2 hours.

Performance

LIS Dept Code
Performing Location(s)
Sendout Seattle Children's Hospital Department of Laboratories
206-987-2617

4800 Sand Point Way NE
OC.8.720
Seattle, WA 98105
Frequency
Performed: Daily. Turnaround Time: 5 days.
Available STAT?
No

Billing & Coding

CPT codes
Billing Comments

CPT: 82615

LOINC