Test directory: Cystine, Quant w/Creat, Rnd Ur

Ordering Code 4755
Test Name Cystine, Quant w/Creat, Rnd Ur
Alias Cystine, Quant w/Creatinine, Random Urine
Preferred Specimen Urine, Random
Preferred Container Sterile Container
No Preservative
Other Specimen/Container Random Urine in Clean Container
Optimum Volume 20 mL
Collection Instructions Do Not use preservatives
Patient age & sex required on requisition
Freeze immediately. Do not thaw.
Handling Instructions Freeze immediately. Do not thaw.
Transport Requirements Oahu: Frozen
Airline: Frozen
Specimen Stability Ambient: Not Stable
Refrigerated: Not Stable
Frozen: 2 Months
Rejection Criteria Ambient, pH<2, Preservatives used, Refrigerated, Thawed
Avail. Stat NO
Analytic Time Up to 10 Days
Methodology Liquid Chromatography Mass Spectrometry (LCMS)
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of June 29, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Cystine ALL See report.
Creatinine, Random Urine ALL See report.