Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

STONERISK® CYSTINE TEST

ORDERING INFORMATION:
Geisinger Epic Procedure Code: LAB1354         Geisinger Epic ID: 53337

SPECIMEN COLLECTION
Specimen type:
24-hour urine collection
Preferred collection container:
Specimen required:
60 mL of 24-hour urine collected in a Quest 24hr urine plain kit AND 50 mL of 24 hour urine collected in a Quest 24hr urine acid kit; minimum 30 mL.
Special notes:
Use only Quest 24-hour Urine Collection Kits specific for renal stone formation diagnosis. Follow instructions in the kit.

1.) Upon completion of 24-hour collection in the large orange collection container, tighten the cap on the container and mix contents in the container vigorously for one minute. A good mix will assure accurate test results.

2.) Carefully fill the two plastic white vials with urine collected in the large orange container. The two white vials must be filled within two to four hours of completion of 24-hour collection. Fill and cap vials one at a time. Cap both vials tightly, write patient's name on each vial, and place in zip-lock bags provided (do not remove absorbent sheets).

3.) Complete the patient information section.

4.) Place vials box and transport to the laboratory. Do not transport large orange collection container.

For High Urine Output: Patient with a high urine output (greater than 3.8 L) will require more than one large container. Collect urine in the first container until it is 3/4 full and then begin filling the second container to complete the 24-hour collection. Carefully follow steps 1-4 for each jug and mark one as box 1 of 2 and the other box 2 of 2.

Notes:
Urine must only be collected and stored in the large orange collection container.
Do not remove sponge from the orange collection container.
Do not remove wool from white container.
Do not collect the first urination at the beginning of 24-hour collection.
During collection process store large orange container in a cool location.
Patient preparation:
See special instructions.

SPECIMEN PROCESSING
Transport temperature:
Room temperature.
Specimen stability:
Room temperature: 10 days. Refrigerated: 10 days. Frozen: Unacceptable.

TEST DETAILS
Additional information:
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
CPT code(s):
82131, 82570
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Cystine and Creatinine
Methodology:
Calculation
Immunochemiluminometric
Spectrophotometry
Synonyms:
Quest test code 15569 Stone Cystin
Clinical significance:
The custom StoneRisk® Cystine test is a quantitative analysis of urinary cystine that measures urinary risk factors for kidney stone formation.

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Set up: Tues, Fri; Report available: 3-6 days    
Performed stat? No
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