Test Details

Mnemonic

UCYS

Ordering Code

3700041

CPT-4 Code(s)

82131

Specimen Information

Collect

24-hour urine (refrigerate during collection)

Specimen Preparation

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. Mix 24 hour collection well and send 1.8 mL urine frozen in a screw-capped plastic vial. Record total volume on test requisition and specimen label.

Minimum Volume

0.6 mL

Transport Temperature

Frozen

Rejection Criteria

pH <2.0
IVP within 48 hours of collection

Stability

Room temperature: Unacceptable
Refrigerated: 48 hours
Frozen: 60 days

Methodology

Chromatography/Mass Spectrometry
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Reference Range

See report
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Performing Laboratory

Quest SJC
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