| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Crystals, Urine
Test Code397
CPT Codes
81015
Preferred Specimen
10 mL urine - urinalysis transport tube (yellow-top, blue fill line preservative tube)
Minimum Volume
Preserved: 3 mL
Unpreserved: 1 mL
Unpreserved: 1 mL
Other Acceptable Specimens
Yellow/red swirl-topped conical transport tube with preservative • 3 mL unpreserved urine cup
Instructions
Encourage mid-stream samples to minimize contamination and improve accuracy.
Label the sample appropriately and store at room temperature until pick-up.
Label the sample appropriately and store at room temperature until pick-up.
Transport Container
Yellow-top, blue fill line urinalysis transport tube
Transport Temperature
Preserved: Room temperature
Unpreserved: Refrigerated (cold packs)
Unpreserved: Refrigerated (cold packs)
Specimen Stability
Preserved urine
Room temperature: 72 hours
Refrigerated: 72 hours
Frozen: Unacceptable
Unpreserved urine
Refrigerated: 24 hours
Room temperature: 72 hours
Refrigerated: 72 hours
Frozen: Unacceptable
Unpreserved urine
Refrigerated: 24 hours
Methodology
Microscopy/Polarized Light
Setup Schedule
Daily
Report Available
1 day
Clinical Significance
Abnormal crystals may appear in urine as a result of pathology or due to normal catabolism
Performing Laboratory
| Quest Diagnostics-Seattle |
| 1737 Airport Way S Suite 200 |
| Seattle, WA 98134-1636 |
Last Updated: November 6, 2024
