ARUP's Laboratory Test Directory

0099460: Calculi (Stone) Analysis

Test Mnemonic: CALCULI
Methodology: Reflectance Fourier Transform Infrared Spectroscopy (FTIR)/Polarizing Microscopy 

Performed: Sun-Sat

Reported: 1-4 days

Specimen Required:  
Collect: Calculi specimen.

Transport: Air-dry calculi and transport in an ARUP Standard Transport Tube. Larger calculi specimens may be transported in a clean, empty urine cup (150 mL) or similar container.

Remarks: Calculi specimens transported in liquid require special handling to be processed.  Blood and moisture interfere with this methodology.  Samples that are wrapped in tape or embedded in wax will delay or prevent analysis and should not be submitted. 

Stability: Indefinitely

Reference Interval:
By report

Interpretive Data:
Calculi are the products of physiological processes that yield crystalline compounds in a matrix of biological compounds and blood.  The clinically significant crystalline components identified in calculi samples are documented on the sample report.  Matrix components are not reported.



Note:
Calculi samples that are transported in liquid and received wet or bloody will be dried for 48-72 hours prior to analysis.

CPT Code(s):
82365