Initial test to diagnose or rule out cystinuria.
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
New York DOH Approval Status
Random urine. Avoid dilute urine when possible.
Mix urine well. Transfer 8 mL urine to ARUP Standard Transport Tubes and freeze immediately. (Min: 3 mL)
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Refrigerated or room temperature specimens.
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.
Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month
Effective November 18, 2019
|Cystine, Urine - Quantitative||
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.
Laboratory Developed Test (LDT)
|Component Test Code*||Component Chart Name||LOINC|
|0080952||Amino Acids, Urine Interpretation||49248-8|
|0081107||Cystine, Urine - Quantitative||56677-8|
- Urine Amino Acids
- urine arginine
- Urine Cystine
- urine lysine
- urine ornithine