Days Set Up
Monday - Friday
Analytic Time

4 - 6 days

MiChart Code
Cystinuria Profile, 24 HR Urine
Soft Order Code
CYSQN

Test Updated:

Synonyms

Arginine, Quantitative, Urine
Cystine, Quantitative, Urine
Lysine, Quantitative, Urine
Ornithine, Quantitative, Urine
CQN-ARGIN
CQN-LYSINE
CQN-ORNITH
CQN-QUAL
CQN-QUANT
CYSTINE-Q
ARGININE
LYSINE
ORNITHINE
QUALITATIVE CYSTINE
QUANTITATIVE CYSTINE

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Test Overview

Test Methodology

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

Test Usage

Evaluation of cystinuria.

Reference Range

CYSTINE: 3-15 years: 11 - 53 mcmol/24 hours; >=16 years: 28 - 115 µmol/24 hours. LYSINE: 3-15 years: 19 - 140 mcmol/24 hours; >=16 years: 32 - 290 mcmol/24 hours. ORNITHINE: 3-15 years: 3 - 16 mcmol/24 hours; >=16 years: 5 - 70 mcmol/24 hours. ARGININE: 3-15 years: 10 - 25 mcmol/24 hours; >=16 years: 13 - 64 mcmol/24 hours.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Instructions

Collect 24 hour urine. Add 20 ml toluene as a preservative at the start of collection or refrigerate during collection and send frozen. Record total 24 hour urine volume and collection dates/times on request form.

24-hour Urine Jug
Normal Volume
5 mL aliquot from 24 hour urine collection.
Minimum Volume
1 mL aliquot from 24 hour urine collection.

Billing Information

CPT Code
82136
Pro Fee Code
 
Insurance Auth Info
 
LOINC
 

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.

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