CYSTINE, QUANTITATIVE, RANDOM URINE

Specimen Required
Collect a random urine, Send 1.8 mL urine (0.6 mL minimum) frozen in a screw-capped plastic vial.

Rejection Criteria
pH <2.0; IVP within 48 hours of collection

Methodology
Chromatography/Mass Spectrometry

Stability
Room temperature: Unacceptable: Refrigerated: Unacceptable; Frozen: 60 days

Reference Range
By report

Performed
Tuesday, Thursday

Turnaround Time6-10 days
Test CodeCYSRU
CPT-4 Code (s)
82131, 82570
LOINC Codes
Cystine:   22687-8  
Creatinine, Random Urine:   14683-7  

Warde
Medical
Laboratory