Clinics and Departments

Laboratory Services

Lab Dept:

Urine/Stool

Test Name:

CYSTURIA PROFILE, QUANTITATIVE RANDOM URINE

General Information

Lab Order Codes:

UCYSR

Synonyms:

Cystine, random urine

CPT Codes:

82136 – Amino acids, 2 to 5 amino acids, quantitative, each

Test Includes:

Cystine, Lysine, Ornithine, Arginine reported in nmol/mg creatinine

Logistics

Test Indications:

Biochemical diagnosis and monitoring of cystinuria. Cystinuria is a disorder of the transport (intestine, kidney tubules) of four amino acids: cystine, lysine, arginine, and ornithine.

Lab Testing Sections:

Urine/Stool – Sendouts

Referred to:

Mayo Medical Laboratories (Test: CYSR)

Phone Numbers:

Minneapolis:

Saint Paul:

 

612-813-6580

651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

3 - 5 days, test set up Monday - Friday

Special Instructions:

N/A

Specimen

Specimen Type:

Urine, random

Container:

Plastic leakproof container

Draw Volume:

5 mL (Minimum: 1 mL) urine

Processed Volume:

Same as Draw Volume

Collection:

Routine urine collection

Special Processing:

Lab Staff: Send specimen frozen in a plastic 13 mL urine tube. Forward promptly.

Patient Preparation:

None

Sample Rejection:

Mislabeled or unlabeled specimens

Interpretive

Reference Range:

Age/Amino Acid, Random urine (nmol/mg creatinine)

 

Arginine

Ornithine

Cystine

Lysine

<=12 mos

10 - 560

<265

12 - 504

19 - 1988

13 – 35 mos

20 - 395

<70

11 - 133

25 - 743

3 – 6 yrs

14 - 240

<44

<130

14 - 307

7 – 8 yrs

<134

<17

<56

17 - 276

9 – 17 yrs

<153

<18

<104

10 - 240

>=18 yrs

<114

<25

10 - 98

15 - 271

Critical Values:

N/A

Limitations:

N/A

Methodology:

Liquid Chromatography – Tandem Mass Spectrometry (LC-MS/MS)

References:

Mayo Medical Laboratories Web Page October 2012

Updates:

10/31/2012: Reference range update.



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