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HelpTest Code LAB20188 Cystine 24 Hour Urine
Department
Send Outs
Reference Lab Test Number
UCYS
Collection Requirements
Collect 24 hour urine, refrigerate during collection. Do not use preservative. Start collection after first morning void and collect through first morning void of the next day.
Refer To
Primary Collection Container
24 HR Urine container
Transport
Frozen
Preferred Transport Temperature
Frozen
Processing
Mix 24 hour collection well and send 2.0 mL urine (0.6 mL minimum) in a screw-capped plastic vial. Record total volume on test requisition and specimen label.
Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 60 days
Minimum Testing Volume
0.6 mL
Reference Range
By Report
Methodology
Chromatography/Mass Spectrometry
Performed
Tuesday, Thursday
Reported
7-11 Days
CPT Codes
82131
Unacceptable Conditions
pH <2.0; IVP within 48 hours of collection