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HelpTest Code LAB2470 Stool Chloride Level
Additional Codes
CL STOOL
Clinical System Name
Stool Chloride Level
Synonyms
Chloride Stool
CL, Feces
Fecal Chloride
Stool Chloride
Sample Requirements
Specimen: Stool
Container(s): Sterile Screw-Capped Container
Preferred Vol: 1.0 mL
Minimum Vol: 0.3 mL
Note: Stool must be "Fresh and Liquid". Testing can only be performed on stools sufficiently liquid to yield a fully aqueous supernatant after centrifugation.
Processing Instructions
Reject due to: Sample submitted in diaper. Formed/not liquid stool.
Spin: Y
Aliquot: Y
Temp: -20 C
Storage Location: Samples should be spun and the supernate frozen at -20 ASAP. If unable to centrifuge, freeze the whole sample right away.
Off-site Collection: Samples should be spun and the supernate frozen at -20 ASAP. If unable to centrifuge, freeze the whole sample right away.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Room Temp |
2 h |
|
| Liquid Stool Supernatant | Refrigerated | 48 h |
| Frozen |
|
Availability
| STAT | Performed | TAT |
|---|---|---|
| N |
Daily |
Performing Laboratory
University of Washington
Department of Laboratory Medicine
1959 NE Pacific St, NW220
Seattle, WA 98195
Phone Number: (206) 520-4600
Department
Department: Send Outs
Phone Number: (206) 987-2563
CPT Codes
82438
Methodology
Method: PVC Membrane Dndirect Potentiometry
Analytical Volume: 0.3 mL
Limitations: Since the virus that causes COVID-19 can be shed in stool, chemistry assays will only be performed on liquid stool samples from patients with chronic diarrhea and a documented negative SARS-CoV-2 PCR test within 3 days of stool collection.
Reference Range
Units: mEq/L
| Female | Male | ||
|---|---|---|---|
| Age | Range | Age | Range |
| 16y- | 0-39 | 16y- | 0-39 |
Send Out Instructions
| Reference Test Name: |
Chloride, Stool |
| Reference Lab Test Code: | |
| Instructions: |
Send out Monday through Friday with the UW courier. |