Initial test to diagnose or rule out cystinuria.
Quantitative Liquid Chromatography/Tandem Mass Spectrometry
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||
Compliance Statement B: For laboratory developed tests not using a RUO kit, and for FDA approved, cleared or 510(k) exempt assays with alterations. This test was developed and its performance characteristics determined by ARUP Laboratories. The U. S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.
|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