Potassium, CSF (Sendout)
General Information
- Lab Name
- Lab Code
- 1114
- External Test Id
- 0020155
- Description
Useful For: Measuring potassium levels in CSF. Clinical indications are not well defined.¹ CSF potassium levels are often approximately 70% of corresponding serum potassium.
Ordering Note: If provider requests electrolytes on CSF, order this test along with Chloride, CSF and Sodium, CSF.
- References
- Synonyms
- 0020155, CSF Electrolytes, K
- Components
Interpretation
- Method
Quantitative Ion-Selective Electrode
- Reference Range
- Ref. Range Notes
Reference Interval: Adults: 2.5–3.9 mmol/L - References
Ordering & Collection
- Specimen Type
- CSF
- Collection
-
Collect 1 mL CSF
- Handling Instructions
Outside Laboratories: Centrifuge to remove cellular material. Transfer 1 mL supernatant to a separate aliquot. Refrigerate sample while awaiting shipment; transport with a cold pack.
Stability: Refrigerated (preferred): 2 weeks; Frozen: 6 months; Ambient: 2 weeks.
Unacceptable Conditions: Specimen types other than those listed. Specimens too viscous to be aspirated by instrument.
- Quantity
-
Requested: 1 mL CSF
Minimum: 0.2 mL CSF
Processing
- Receiving Instructions
Centrifuge to remove cellular material. Transfer 1 mL supernatant to a separate aliquot. Refrigerate CSF.
Sendouts:
- Order ARUP Test: 0020155
- Interfaced: Yes [Interface: 602; Department: ARPR]
Stability: Refrigerated (preferred): 2 weeks; Frozen: 6 months; Ambient: 2 weeks.
Unacceptable Conditions: Specimen types other than those listed. Specimens too viscous to be aspirated by instrument.
- Misc Sendout
Performance
- Lab Department
- Frequency
- Performed: Sunday through Saturday. Reported: 1 day from sample receipt at ARUP Laboratories.
- Available STAT?
- No
- Performing Location(s)
-
Sendout ARUP Laboratories, Inc.
800-522-2787500 Chipeta Way
Salt Lake City, UT 84108
Billing & Coding
- Billing Comments
CPT: 84999