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22457 Crystals, Other Fluids

Crystals, Other Fluids
Test Code: CRY-O
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Body Fluid​ Red Top Tube (RTT)​ ​ 1.0 mL​ 0.75 mL​ 0.5 mL​
Collection Processing Instructions
Collect specimen in a clean container without preservative.​
Specimen Stability Information
Specimen Type Temperature Time
Body Fluid​ Ambient​ <24 hours​
Refrigerated​ >24 hours​
Rejection Criteria
Collected in a Serum Separator Tube (SST)
Specimens with hyaluronidase ​
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ 1 day​ Compensated Polarized Light Microscopy​
Test Information
For synovial fluids, order "Synovial Fluid, Crystal Analysis", test code SFCRY. For urine specimens, crystal review is routinely performed and as part of an RUA request. If urine and only crystal review is desired, order MISC and comment Urine for Crystals.​
Reference Range Information
Performing Location Reference Range
Marshfield​ Negative for crystals ​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
81015​ ​ ​ ​ ​
Ordering Applications
Ordering Application Description
​Centricity ​Crystals, Misc
​Cerner ​Crystal Examination Body Fluid
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Body Fluid​ Red Top Tube (RTT)​ ​ 1.0 mL​ 0.75 mL​ 0.5 mL​
Collection Processing
Collect specimen in a clean container without preservative.​
Specimen Stability Information
Specimen Type Temperature Time
Body Fluid​ Ambient​ <24 hours​
Refrigerated​ >24 hours​
Rejection Criteria
Collected in a Serum Separator Tube (SST)
Specimens with hyaluronidase ​
Reference Range Information
Performing Location Reference Range
Marshfield​ Negative for crystals ​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ 1 day​ Compensated Polarized Light Microscopy​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
81015​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.