Days Set Up
Varies; test performed twice per week
Analytic Time

8 hours

MiChart Code
Cystine, Random or 24 HR
Soft Order Code
CYST

Test Updated:

Synonyms

CYSTINE, URINE
CYST

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

Nitroprusside

Test Usage

Evaluation of cystinuria

Reference Range

Negative

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

Specimen Requirements

Collection Instructions

Collect 24 hour urine specimen with no preservative. Aliquot at least 15 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Random urine is also acceptable.

Normal Volume
15 mL aliquot of 24 hour or random urine
Minimum Volume
7 mL aliquot of 24 hour or random urine. Cannot perform test with less than 7 mL urine.

Billing Information

CPT Code
82127
Pro Fee Code
 
Insurance Auth Info
 
LOINC
Z58-8

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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.