Cystine, Quantitative, Timed Urine

Sunquest Code:UAA1T  
Epic Code:LAB3802Epic Name:Amino Acid Single Timed Urine
Methodology:High performance ion exchange liquid chromatography
Turnaround Time:Performed Mon-Fri, results are reported the next day.
Special Instructions:Provide clinical history. If >10% of volume is lost during 24 hour collection, test will be reported as a random collection. Comment "Cystine".
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Urine Collection Procedure

Collection Instructions

Specimen:Urine, 24 hour collection preferred
Optimal Volume:Submit entire collection; analysis requires 1 mL
Container:3 L plastic jug

Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Aliquot 5 mL, 1 mL minimum. Record total volume and duration. Store in freezer.
Shipping Instructions:Ship on dry ice.
Test Performed at or Referral Lab Biochemical Genetics  (UMMC-East Bank)


Reference Range:

Half Cystine

0-3 mo

0-40 umol/d

4 mo-11y

41-135 umol/d

12 y and older

30-243 umol/d



Use:Urine cystine is diagnosic for cystinuria.

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