| Ordering Recommendation: |
Use for monitoring treatment of patients previously diagnosed with cystinuria. To diagnose or rule out cystinuria, refer to Cystinuria Panel (0081105) or Amino Acids Quantitative, Urine (0080044).
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| Methodology: |
Liquid Chromatography/Tandem Mass Spectrometry
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| Performed: |
Wed
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| Reported: |
3-7 days
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| Specimen Required: |
Collect: 24-hour or other timed urine collection. Avoid dilute urine when possible. Refrigerate 24-hour/timed specimens during collection.
Specimen Preparation: Mix urine well. Transfer 8 mL aliquot urine to ARUP Standard Transport Tubes and freeze immediately. (Min: 3 mL) Record total volume and collection time interval on transport tube and test request form.
Storage/Transport Temperature: CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Remarks: Clinical information is needed for appropriate interpretation. Additional required information includes age, gender, diet (eg, TPN therapy), drug therapy, and family history. Biochemical Genetics Patient History Form is available on the ARUP Web site or by contacting ARUP Client Services.
Unacceptable Conditions: Refrigerated or room temperature specimens.
Stability (collection to initiation of testing): Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month
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