Calculi (Stone) Analysis
Also known as: CALCULI
Use
Calculi, also known as stones, are the products of physiological processes that yield crystalline compounds in a matrix of biological compounds and blood. This test helps determine the composition of these calculi, which is clinically significant for understanding the underlying causes of conditions such as nephrolithiasis or kidney stone disease. The test results provide insights into the crystalline components in the calculi, which can guide treatment decisions.
Special Instructions
Specimens should be air dried and transferred to an ARUP standard transport tube. Larger calculi samples may be transferred to a clean, empty urine cup or similar container. Special handling is required for specimens contaminated with blood or transported in liquid, as this might delay analysis.
Limitations
The test does not report matrix components. Gross description may not be consistent with the composition determined by FTIR analysis. Specimens wrapped in tape or embedded in wax should not be submitted as they delay or prevent analysis.
New York Approved
Methodology
Other
Biomarkers
LOINC Codes
- 3154-2
- 14618-3
- 9795-6
Result Turnaround Time
1-4 days
Related Documents
For more information, please review the documents below
Specimen
Other
Volume
Not provided
Minimum Volume
Not provided
Container
ARUP standard transport tube, clean empty urine cup (150 mL) or similar container
Collection Instructions
Air dry calculi and transfer to an appropriate container. Larger calculi may be placed in a clean urine cup.
Storage Instructions
Store and transport at room temperature. Can also be frozen or refrigerated.
Causes for Rejection
Collection or shipping container with a needle attached; specimens transported in liquid, received in gel, or contaminated with blood.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Indefinitely |
| Refrigerated | Indefinitely |
| Frozen | Indefinitely |