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Recommendations when to order or not order the test. May include related or preferred tests.
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 by LC-MS/MS, Urine (2009419).
New York DOH Approval Status
Indicates whether a test has been approved by the New York State Department of Health.
This test is New York state approved.
Specimen Required
Patient PreparationInstructions patient must follow before/during specimen collection.
CollectSpecimen type to collect. May include collection media, tubes, kits, etc.
24-hour or other timed urine collection. Avoid dilute urine when possible. Refrigerate 24-hour/timed specimens during collection.
Specimen PreparationInstructions for specimen prep before/after collection and prior to transport.
Mix urine well. Transfer 4 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 TemperaturePreferred temperatures for storage prior to and during shipping to ARUP. See Stability for additional info.
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Unacceptable ConditionsCommon conditions under which a specimen will be rejected.
Refrigerated or room temperature specimens.
RemarksAdditional specimen collection, transport, or test submission information.
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.
StabilityAcceptable times/temperatures for specimens. Times include storage and transport time to ARUP.
Expected turnaround time for a result, beginning when ARUP has received the specimen.
3-7 days
Reference Interval
Normal range/expected value(s) for a specific disease state. May also include abnormal ranges.
Effective November 18, 2019
Test Number
Components
Reference Interval
Cystine, Urine - Quantitative
Age
Reference Interval
0-2 months
Less than or equal to 870 µmol/g creatinine
3-11 months
Less than or equal to 300 µmol/g creatinine
1-2 years
Less than or equal to 150 µmol/g creatinine
3-5 years
Less than or equal to 125 µmol/g creatinine
6-11 years
Less than or equal to 100 µmol/g creatinine
12 years and older
Less than or equal to 150 µmol/g creatinine
Interpretive Data
May include disease information, patient result explanation, recommendations, or details of testing.
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Compliance Category
Laboratory Developed Test (LDT)
Note
Additional information related to the test.
This test is indicated only to monitor patients with cystinuria on therapy.
Hotline History
N/A
CPT Codes
The American Medical Association Current Procedural Terminology (CPT) codes published in ARUP's Laboratory Test Directory are provided for informational purposes only. The codes reflect our interpretation of CPT coding requirements based upon AMA guidelines published annually. CPT codes are provided only as guidance to assist clients with billing. ARUP strongly recommends that clients confirm CPT codes with their Medicare administrative contractor, as requirements may differ. CPT coding is the sole responsibility of the billing party. ARUP Laboratories assumes no responsibility for billing errors due to reliance on the CPT codes published.
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
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